William Stephens Twenhofel / John Calvin Reed / George O. Gates

STANFORD:36105001170146

Mines and mineral resources

William Stephens Twenhofel / R. A. Black / D. F. Balsinger

UOM:39015095109263

Earthquakes

Arthur Johnson / Carl Edward Kindsvater / Diane Curtis / Edwin Wallace Lohr / George Earle Becraft / Guy Earl Harbeck / John David Love / Matthew Irvin Rorabaugh / Max Gregg White / Michael Fleischer / F. F. Schrader / John M. Stevens / R. W. Carter / Shirley Loleta Simpson Houser / William Stephens Twenhofel / Hubert Jerome Tracy / L. B. Laird

OSU:32435030456354

Chemical elements

Edwin Wallace Lohr / Ernest Earwood Glick / Frank Darwyn Spencer / Helmuth Wedow / Hugh Richard Gault / John William Mangan / M. G. White / Norman Julius King / W. H. Robinson / William J. Drescher / William James Hail (Jr.) / William Stephens Twenhofel / Frederick C. Dreher / J. B. Ivey / Jack Bennett Graham / James Rogers Gill / Margaret L. Erwin / Paul Lewis Killeen / Sherwood Earl Frezon / Granville Alton Billingsley / Paul N. Brown

OSU:32435030456396

Coal

Arthur Johnson / William Stephens Twenhofel

UCSC:32106020887979

Physical geography

William Stephens Twenhofel / John Ezra Moore / Rudolph A. Black

UOM:39015095063288

Earthquakes

Paul William Richards

UCSC:32106020887490

Bighorn Mountains (Wyo. and Mont.)

R. A. Black / William Stephens Twenhofel

ERDC:35925002025903

Geology

John F. Elder / Lawrence H. Smith / Richard W. Will / Ronald Charles Severson / Hansford T. Shacklette / William B. Krohn

OSU:32435030454615

Alaska

John Eliot Allen / Marian R. Burks / Philip F. McKinlay / William H. Tonking / John Harold Schilling

UIUC:30112027086526

Geology

William Henry Reichert

STANFORD:36105017143715

Geology

Alice Evelyn Wilson / K. R. Dawson / L. H. Green / Richard W. Hutchinson / Robert William Boyle / Stephen Clive Robinson / Geological Survey of Canada / Charles T. Illsley / Robert N. Green

UIUC:30112026966405

Bivalves, Fossil

Geoffrey Bruce Newton / Harrell Le Roy Strimple / J. M. Cocke / James L. Lamb / Peter H. Von Bitter / Raymond Cecil Moore / Robert W. Frey / Robert William Scott / John H. Beard

UIUC:30112027068441

Conodonts

Fay Wilmott Libbey / Harold Charles Harrison / Harry Fagan Yancey / John Eliot Allen / Oregon. Dept. of Geology and Mineral Industries / Raymond Clarence Treasher / Thomas Prence Thayer / William Henry Twenhofel / Ewart Merlin Baldwin / Max Richard Geer / Maurice Donovan Curran / Hugh Kenneth Lancaster

UIUC:30112027741435

Black sand

William Crane Bradley

STANFORD:36105032278066

Coast changes

William F. Tanner

STANFORD:36105115034014

Geology

Ralph Arnold / William J. Kemnitzer

UOM:39015068594533

Oil fields

Indiana. Division of Geology / William Newton Logan / Edgar Roscoe Cumings / Clyde A. Malott / Stephen Sargent Visher / William Motier Tucker / John Robert Reeves

STANFORD:36105031200186

Geology

William R. Brice

UOM:39015025010540

Education

Willard Rouse Jillson / Carl Ortwin Sauer / Charles Butts / Charles Henry Richardson / Darrell Haug Davis / Heinrich Ries / James Marvin Weller / Kentucky. Geological Survey, 1920-1932 / Leonidas Chalmers Glenn / Louis Wade Currier / Stuart Weller / Thomas Edmund Savage / Warren Raymond King / William Delbert Funkhouser / William Henry Twenhofel / Wilbur Greeley Burroughs / William Snyder Webb / James S. Hudnall / Lewis Cass Robinson

UIUC:30112026894961

Boring

William R. Lund

UIUC:30112026931318

Government publications

Elton Albert Youngberg / Ewart Merlin Baldwin / Fay Wilmott Libbey / John Eliot Allen / William Donald Wilkinson / William Henry Twenhofel / Wallace Dean Lowry / Ralph S. Mason

UIUC:30112027741377

Bauxite

National Research Council (U.S.). Committee on Sedimentation / Thomas Wayland Vaughan / William Henry Twenhofel / Arthur Carleton Trowbridge

NAP:10536

Sedimentation and deposition

William Stephens Twenhofel

WISC:89011036894

Arthur Johnson / Carl Edward Kindsvater / Diane Curtis / Edwin Wallace Lohr / George Earle Becraft / Guy Earl Harbeck / John David Love / Matthew Irvin Rorabaugh / Max Gregg White / Michael Fleischer / F. F. Schrader / John M. Stevens / R. W. Carter / Shirley Loleta Simpson Houser / William Stephens Twenhofel / Hubert Jerome Tracy / L. B. Laird

OSU:32435030456354

Chemical elements

William Stephens

LCCN:58010078

Georgia

Arthur Johnson / William Stephens Twenhofel

UCSC:32106020887979

Physical geography

William Stephens Twenhofel / John Ezra Moore / Rudolph A. Black

UOM:39015095063288

Earthquakes

R. A. Black / William Stephens Twenhofel

ERDC:35925002025903

Geology

Arthur Johnson / Roberts, Daryl L. (Daryl Lynn) / W. S. (William Stephens) Twenhofel / United States. Bureau of Reclamation. Alaska District Office

OCLC:1007185382

Hydroelectric power plants