Earl Orel Heady / Edna Douglas / J. Ronald Frazer / John Clifford Frey / John Francis Timmons / Landy Boyd Altman / Mary Stewart Lyle / Earl Raymond Swanson / Earl W. Kehrberg / Ernest J. Buresh / J. D. Nord / John C. O'Byrne / Russell Oscar Olson / Kathryn Philson / V. H. Nielsen

UIUC:30112019567301

Agricultural productivity

Landy Boyd Altman / E. H. Jebe

UIUC:30112019570974

Agriculture

Landy Boyd Altman

UGA:32108030230174

Sweet potatoes

Landy Boyd Altman

OCLC:36750206

Electric power distribution

Earl Orel Heady / George M. Beal / L. C. Hammond / Landy Boyd Altman / Walter Theodore Federer / Arthur Godfrey Norman / Carl Wendell Allen / Earl W. Kehrberg / Ernest J. Buresh / Harald R. Jensen / Orlin James Scoville / Ray E. Wakeley / Charles Allen Black / Donald R. Fessler / Kathryn Philson

UIUC:30112088691198

Agriculture

Landy Boyd Altman / Ernest J. Buresh / M. Kathryn Philson

UCAL:B2676641

Electricity in agriculture

Landy Boyd Altman / Ernest J. Buresh / Kathryn Philson

UIUC:30112019570602

Agriculture

Earl Orel Heady / Edna Douglas / Fred Homer Wiegmann / J. A. Zoellner / John Parry Dodds / Landy Boyd Altman / Owen Lavar Brough / Virgil Lee Hurlburt / E. H. Jebe / Geoffrey Seddon Shepherd / J. M. Scholl / K. R. Marvin / Oscar Kempthorne / Elliott S. Clifton / Russell Oscar Olson

UIUC:30112002600036

Electric power distribution

Landy Boyd Altman / Iowa Agricultural Experiment Station / E. H. Jebe

OCLC:17634339

Electricity in agriculture

Arthur B. Mackie / Beatrice Elizabeth Donaldson / Earl Orel Heady / Gerald W. Dean / John A Schnittker / Landy Boyd Altman / R. H. Shaw / Robert A. Rohwer / E. H. Jebe / Everett G. Stoneberg / Gerald L. Barger / Grace Melvina Augustine / Herbert B. Howell / Hsiang Hsing Yeh / Laurel D. Loftsgard / Jack Ralph Runkles

UIUC:30112000447885

Agricultural laborers

Landy Boyd Altman / Iowa Agricultural Experiment Station / E. H. Jebe

OCLC:17562153

Electric power distribution