Ruric Creegan Roark

STANFORD:36105210401563

Allethrin

Ruric Creegan Roark

UIUC:30112019309571

Agriculture

Ruric Creegan Roark

CORNELL:31924061393405

Agricultural pests

Ruric Creegan Roark

CORNELL:31924018531875

Chloropicrin

United States. Bureau of Entomology and Plant Quarantine

OCLC:6213172

United States. Bureau of Entomology and Plant Quarantine

OSU:32435025771189

Ruric Creegan Roark

CORNELL:31924018832521

Insecticides

Curtis Criss McDonnell / Ruric Creegan Roark / George Lawrence Keenan

UIUC:30112019245411

Agriculture

Ruric Creegan Roark / George Lawrence Keenan

STANFORD:36105211196519

Daisies

Benson H. Paul / C. A. Plaskett / Charles Nicholas Ainslie / Clarence Elbert Clement / Dorothy Nickerson / Edward Mackay Chace / Emilio Pepe Meinecke / Franklin Thomas Cowan / George G. Ainslie / James Johnson / James Stanley Mathewson / John A. Newlin / Joseph Hubert Priestley / Laurence Victor Teesdale / Lewis Bertie Olmstead / Lorraine Joseph Markwardt / Louis Guy Michael / Oliver I. Snapp / Ralph Wylie Frey / Raphael Zon / Ruric Creegan Roark / Samuel Trask Dana / Whitney Coombs / William Gustavus Wahlenberg / William White / C. S. Trimble / H. S. Swingle / Calvin Grant Church / Charles F. Swingle / Ira Doup Clarke / John Martin Gahagan / Lyle Thomas Alexander / R. D. Garver / R. T. Cotton / Harry Lawrence Wilson / Howard E. Middleton

OSU:32435027441294

Agriculture

Ruric Creegan Roark / George Lawrence Keenan

UCAL:$B68826

Agriculture

Ruric Creegan Roark

OCLC:317342580

Allethrin

Ruric Creegan Roark

PURD:32754080232477

Insecticidal plants

Ruric Creegan Roark / Norman Eugene McIndoo / United States. Bureau of Entomology and Plant Quarantine. Division of Insecticide Investigations

OCLC:780428618

DDT (Insecticide)

Ruric Creegan Roark

OCLC:39861160

DDT (Insecticide)

Ruric Creegan Roark

OCLC:13734627

Chlordan

Rurie Creegan Roark / Stati Uniti. Department of Agriculture / United States. Bureau of Entomology and Plant Quarantine. Division of Insecticide Investigations

OCLC:3911859

Botanical insecticides

United States. Bureau of Entomology and Plant Quarantine

OCLC:6213172

Ruth Lawless Busbey / Norman Eugene McIndoo

OCLC:78912220

Insecticides

Ruric Creegan Roark / Norman Eugene McIndoo

OCLC:18404139

DDT (Insecticide)

United States. Bureau of Entomology and Plant Quarantine / Mrs. R. L. Busbey / Norman Eugene McIndoo / Ruric Creegan Roark

OCLC:6213172

John H. Geisse / American Standards Association. Sectional Committee on Standardization for Drawings and Drafting Room Practice / F. Bollenrath / Kenneth Gordon Scott / Ruric Creegan Roark / United States. Civil Aeronautics Administration / United States. Civil Aeronautics Board / United States. Department of Commerce. Office of Technical Services / United States. Public Buildings Administration / United States. Public Roads Administration / Norman Eugene McIndoo

LCCN:44041725

Aeronautics, Commercial

Ruric Creegan Roark / Norman Eugene McIndoo / United States. Bureau of Entomology and Plant Quarantine. Division of Insecticide Investigations

OCLC:759939447

DDT (Insecticide)

United States. Bureau of Entomology

OCLC:1309093012

Codling moth

Ruric Creegan Roark

UVA:X030353835

Chloropicrin

Ruric Creegan Roark

UIUC:30112099120963

Insecticides

Ruric Creegan Roark / R. T. Cotton

COLUMBIA:HS65162579

Aliphatic compounds

Ruric Creegan Roark

UVA:X030353767

Dalbergia

Ruric Creegan Roark

STANFORD:36105210367061

Agricultural pests

Annie Murray Hannay / Glen Blaine Ramsey / Guy Ervin / Harry Lawrence Wilson / Hazel Katherine Stiebeling / Paul Goodwin Redington / Robert William Ayres / Ruric Creegan Roark / Wilbur August Gersdorff / Charles Sterling Trimble / George Konrad Karl Link / Miriam Birdseye / Stanley Paul Young / W. I. Hutchinson

CUB:U183021554268

Agricultural estimating and reporting