R. W. Leukel

OCLC:459638141

R. W. Leukel

MINN:31951D02845404I

Agriculture

R. W. Leukel / Ole Anker Nelson

IND:30000098251212

Chlorine

R. W. Leukel

UIUC:30112019343646

Agriculture

Aaron Guy Johnson / Royal Joyslin Haskell / R. W. Leukel

UVA:X030353883

Grain

Ole Anker Nelson / R. W. Leukel

UIUC:30112019271805

Bunt (Disease of wheat)

R. W. Leukel

MINN:31951P008742275

Agriculture

R. W. Leukel

UIUC:30112019268207

Drills (Planting machinery)

R. W. Leukel / V. F. Tapke

UIUC:30112019290862

Barley

Royal Joyslin Haskell / R. W. Leukel / Emil George Boerner

STANFORD:36105019618433

Cereal smut diseases

R. W. Leukel / John Holmes Martin / C. L. Lefebvre

IND:30000091792543

Sorghum

Theodore Peter Dykstra / Alice Louise Robert / Axel Langvad Andersen / Berten Wendell Allred / Charles Wesley Gantt / Clarence Dinsmore Stein / Claude Kedzie Shedd / F. M. Grant / Franklin Thomas Cowan / Fred Charles Simmons / Howard Wilfred Johnson / I. E. Stokes / John Lewis Creech / L. F. Locke / R. W. Leukel / Robert S. Rummell / Ross Calvin Thompson / Thomas Lotti / Tom Dale / Verne Elbert Davison / William John Reid / William Joseph Sando / William Solomon Porte / Rufus F. Dowdle / Claude Carl Wakeland / Clark E. Holscher / Donald William Chamberlain / Floyd Franklin Smith / Frank P. Cuthbert / Grover F. Brown / Otto H. Coleman / Sears Polydore Doolittle / V. F. Tapke / Walton Monroe Nixon / Walter Oliver Hawley / D. J. Caffrey / Jack L. Dean / Samuel George Lehman

CUB:U183021566168

Agricultural conservation

Wilbur Magruder Hurst

UIUC:30112019271417

Grain

Wilbur Magruder Hurst

UIUC:30112019270823

Cereal smut diseases

Alice Linna Allen Bailey Nightingale / Charles Abel Bennett / Charles Brooks / Charles William Mann / Claude Hope / Dean Humboldt Rose / Dow Dewey Porter / Eloise Blaine Cram / Francis Leo Gerdes / Frederick William Metzger / George W. Barber / Harry Nelson Vinall / Henry Miner Eakin / Irvin Cecil Brown / Katherine Melvina Downey / Norman Julian Wall / Paul Lewis Harding / R. W. Leukel / Robert H. Weidman / Stephen Harold Hastings / Thompson Elwyn Woodward / Verne Lester Harper / William Jeter Phillips / Chalmers Jackson King / Charles Lincoln Powell / Cyril Oliver Bratley / E. A. Gorman / Glen Blaine Ramsey / Horace Greeley Byers / J. C. Stephens / Lenthall Wyman / Ralph P. Hotis / Warren W. Maines / William Cecil Cooper / John Holmes Martin / Lacy Porter McColloch / Orlan Parker / R. R. Graves

OSU:32435027441138

Agricultural credit

Arthur Vance Swarthout / Charles Sidney Leete / David Griffiths / David Segrid Olson / Elmer Lash / Ernst H. Wiecking / Frank Getz Ashbrook / Frank Heidtman Lathrop / Frederick Charles Lincoln / George Emil Heck / George Herbert Coons / H. F. Willard / Harold Coleman Hallock / John Chambers McDowell / Justus Watson Folsom / M. A. Yothers / R. W. Leukel / Ralph Henry Elsworth / Reginald D. Forbes / United States. Department of Agriculture / Walter Cochran Davis / Wiley Croom Smith / William Gustavus Wahlenberg / Charles M. Harris / Dewey Stewart / Donald Bruce / Fletcher Pearre Veitch / Floyd Frank Bondy / Ira Burton Lanphier / Karl Burchard Hanson / Theodore Lemuel Bissell / William Melvin Mohler / Finley George Larmer

OSU:32435053093035

Aerial spraying and dusting in agriculture

F. W. Poos / Arthur Charles Dillman / Barry Cutler Park / Bion Tolman / C. A. Matthews / C. J. Babcock / Earl W. McComas / Ernst Artschwager / Francis Eugene Clark / Francis Raymond Lawson / Geoffrey Seddon Shepherd / Harley A. Daniel / Irvin Cecil Brown / James Ellsworth Kraus / Jay Laurence Lush / John Clifford Elmore / Kenneth Barbee McKinney / Kenneth Pickett Davis / Mark Hughlin Haller / R. A. Blanchard / R. S. Holmes / R. W. Leukel / William Henry Black / Harry M. Elwell / A. F. Howland / Arthur Eugene Molln / Besse B. Day / James Russell Douglas / James Thorp / John Holmes Martin / Nancy Harper Wheeler / R. L. Piemeisel / Ruth C. McGuire / Turner Harcourt Hopper / Walter Whittier Swett / Williamson Edward Hearn / Maurice B. Cox / Byron Lester Southwell / R. R. Graves

OSU:32435027440973

Agriculture

Edward C. Peck / Arthur Koehler / Charles Walter Collins / David Edmund Stephens / Ernest Bateman / George William Trayer / Hazel Katherine Stiebeling / Herbert Dwight Smith / James Edward McMurtrey / John Guice Sutton / John William Roberts / Joseph Clarence Silver / Joshua John Skinner / Mark Hughlin Haller / Milton Henry Fohrman / R. D. Garver / R. W. Leukel / Ralph Lester Miller / Raymond Secord Washburn / T. D. Jarrell / Thompson Elwyn Woodward / Walter M. Osborn / William Henry Fry / William Jasper Spillman / William John Nolan / Willis James Nolan / Carrington Bonsor Williams / Hazel Edith Munsell / Henry Morris Wanser / Ione P. Bassett / James Geere Dickson / James McKenzie Hankins / John Brown Cuno / John Clymer Dunegan / John Holmes Martin / John Robert Magness / R. R. Graves / Samuel Frederick Potts / Aaron Francis Bracken / Aaron Guy Johnson / Fletcher Pearre Veitch / Harvey Blount Mann / William Walter Yothers

OSU:32435027441211

Agriculture

Aaron Guy Johnson / R. W. Leukel / Royal Joyslin Haskell

UVA:X030353884

Grain

R. W. Leukel

OCLC:827052593

Arthur Henry Joel / Charles Calvert Smoot / Charles Knesal Cooperrider / Clarence Sheldon Slater / Cyril Oliver Bratley / Eugenia Cuvillier / George Henry Hepting / George Luther Schnur / George W. Barber / George Wallace Musgrave / Harold Blaisdell Shepard / Herbert George Barott / James Stewart Wiant / James William Park / Lawrence Zeleny / Lewis Bertie Olmstead / Margaret Blanche Hays / Norman Julian Wall / Paul Lewis Harding / R. L. Piemeisel / R. W. Leukel / Stephen Harold Hastings / Stuart Bevier Show / William Henry Black / Barnard Andrew Hendricks / Dan Hansen / David Augustus Coleman / E. I. Kotok / Edwin Alfonso Trowbridge / F. F. Dicke / Francis Raymond Lawson / George Grant Hedgcock / Jacob Martin Lutz / Oscar Roland Mathews / R. S. Holmes / Ralph Wylie Frey / Robert Arthur Norton / J. I. Hardy / Dean Humboldt Rose / Horace Greeley Byers

OSU:32435027441104

Agricultural credit

Charles F. Henderson / Alvin George Anderson / Arthur Frederick Sievers / Brittain Bragunier Robinson / Charles Cloyes Fletcher / Charles W. Culpepper / Clarence Francis Kelly / Claude Kedzie Shedd / Edward Mackay Chace / George Lloyd Hayes / George McMillan Darrow / Harold Edwin Stevens / Ivan Claude Jagger / James Okley Grandstaff / Mark Hughlin Haller / O. K. Hedden / Paul Jones Chapman / R. W. Leukel / Ralph W. Phillips / Robert Wallace Gerdel / Thornton Taft Munger / United States. Department of Agriculture / Walter Ernest Fleming / William Solomon Porte / Joy Harold Clarke / Albert Ronald Merz / Archie Davilla Hess / Donald Navarre Matthews / Emory Dwight Burgess / Frederick Lovejoy Wellman / Harry Willard Von Loesecke / Hubert Hill Moon / Jacob Martin Lutz / Jay Brownlee Davidson / Ole Anker Nelson / Ralph Boutelle Piper / Robert Max Merrill / Walter Louis Hodde / Bailey Edgar Brown / Earl Dewey Mallison / Edgar Vermont Collins / John Laurence Heid / Warren W. Maines

OSU:32435019025188

Agriculture

OCLC:918133999

Albert Sylvester Michael / C. G. Potts / Chester J. Francis / Ernest W. Johnson / Gerald Thorne / Glen Herbert Stringfield / H. E. Walter / Harry Elvin Kemper / Harry L. Garver / Herbert Henry Muntz / Hudson Gillis Reynolds / J. L. Weimer / James Herbert Beattie / Joe Grigsby Lill / John Robert Parker / R. W. Leukel / Selar Stephen Hutchings / Victor Rickman Boswell / Edward G. Molander / F. W. Poos / Harry Wayne Springfield / J. W. Turelle / Myron Sallee Anderson / Sears Polydore Doolittle / V. F. Tapke / Bascombe Britt Higgins / Leon Merle Pultz

CUB:U183021566150

Aerial spraying and dusting in agriculture

R. W. Leukel

OCLC:9705300

Sorghum

Reginald D. Forbes / Alvah Peterson / Arthur Truman Semple / Charles Dwight Marsh / Clarence Luther Forsling / Donald Bruce / Edmund Cecil Shorey / Franklin Post Metcalf / Hugh Curtis McPhee / Irvin Carl Feustel / Joshua John Skinner / Josiah Chase Folsom / Karl S. Quisenberry / Lyle Thomas Alexander / Marinus Westveld / R. W. Leukel / Richard Edwin McArdle / Stuart Bevier Show / Theo. H. Scheffer / Thomas Roy Truax / Walter Carter / Wilbur Clifford Edmundson / William Henry Black / A. B. Clawson / E. I. Kotok / Edwin Alfonso Trowbridge / H. E. Dvorachek / Horace Greeley Byers / K. D. Jacob / K. F. Warner / Lester Henry Reineke / O. N. Eaton / Charles Vinyard Wilson

OSU:32435027441260

Agricultural laborers

R. W. Leukel

OCLC:253987345

R. W. Leukel

OCLC:881799913

R. W. Leukel

OCLC:798726200

Grain

R. W. Leukel

OCLC:15311455

Nematode diseases of plants