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

Wilbur August Gersdorff

MINN:30000010109894

Agriculture

Wilbur August Gersdorff / Norman Mitlin / S. I. Gertler

STANFORD:36105210401548

Allethrin

Wilbur August Gersdorff / Norman Mitlin / S. I. Gertler

STANFORD:36105210402421

Flies

Wilbur August Gersdorff

OSU:32435006458400

Chloropicrin

Norman Mitlin / S. I. Gertler / Wilbur August Gersdorff

STANFORD:36105210401803

Allethrin

Wilbur August Gersdorff / Norman Mitlin / R. H.I. Nelson

STANFORD:36105210401589

Housefly

Wilbur August Gersdorff

RUTGERS:39030022802641

Wilbur August Gersdorff / Norman Mitlin / S. I. Gertler

STANFORD:36105210402421

Flies

Wilbur August Gersdorff

UVA:X030353762

Ethylene dichloride

Norman Mitlin / S. I. Gertler / Wilbur August Gersdorff

STANFORD:36105210401480

Benzamide

Norman Mitlin / S. I. Gertler / Wilbur August Gersdorff

STANFORD:36105210401803

Allethrin

Wilbur August Gersdorff / Norman Mitlin / R. H.I. Nelson

STANFORD:36105210401589

Housefly

Wilbur August Gersdorff

RUTGERS:39030022802641

Wilbur August Gersdorff / Norman Mitlin / S. I. Gertler / United States. Bureau of Entomology and Plant Quarantine

OCLC:781089135

Flies

S. I. Gertler / Norman Mitlin / Wilbur August Gersdorff / United States. Bureau of Entomology and Plant Quarantine

OCLC:780540056

Allethrin

Norman Mitlin / S. I. Gertler / Wilbur August Gersdorff / United States. Bureau of Entomology and Plant Quarantine

OCLC:780445605

Benzamide

Norman Mitlin / S. I. Gertler / Wilbur August Gersdorff / United States. Bureau of Entomology and Plant Quarantine

OCLC:781744822

Allethrin

Wilbur August Gersdorff / Norman Mitlin / S. I. Gertler

OCLC:780665177

Allethrin

Wilbur August Gersdorff / Norman Mitlin / R. H. Nelson

OCLC:780571791

Housefly