Wind Goodfriend / Gary W. Lewandowski Jr. / Charity Brown Griffin / Thomas Heinzen

9781544380506 / 154438050X

Psychology

Gary Wayne Hergert

CORNELL:31924068974702

Fertilizers

Gary J. Zimmerman

9780806311609 / 0806311606

History

Gary J. Zimmerman

WISC:89061707097

German Americans

OCLC:36177510

Soil moisture

Edwin J. Penas

OCLC:1487663669

Fertilizers

Richard Anton Wiese

OCLC:1509373638

Nitrogen fertilizers

Charles A. Shapiro / Gary W. Hergert / Melinda McVey McCluskey

OCLC:36027045

Soil fertility

Gary W. Hergert / United States. Office of Water Research and Technology / Nebraska Water Resources Center / University of Nebraska--Lincoln. Water Resources Research Institute

OCLC:4623548

Nitrogen fertilizers

Gary W. Hergert / United States. Office of Water Research and Technology / Nebraska Water Resources Center

OCLC:9330240

Soils

OCLC:916286226

E. J. Penas / Gary W. Hergert / Robert Bruce Ferguson / Charles A. Shapiro / University of Nebraska--Lincoln. Cooperative Extension

OCLC:31277458

Corn

OCLC:33330166

Corn

Charles S. Wortmann

OCLC:1282650041

Micronutrient fertilizers

Richard Bevan Ferguson

OCLC:1495129152

Soil fertility

OCLC:1484925782

Field crops

Robert Garrow Wilson / Susan S. Martin / John A. Smith / Central High Plains Dry Bean and Beet Group / Lee W. Panella / C. Dean Yonts / Stephen D. Miller / K. James Fornstrom / Gary W. Hergert / Jeffrey D. Bradshaw / Gary L. Hein / Scott J. Nissen / Robert M. Harveson / Barry J. Jacobsen / Dave L. Reichert / Gary L. Stone / Tom L. Holman / Jessica J. Johnson

1561610275 / 9781561610273

Sugar beet

OCLC:37557951

Irrigation

Gary W. Hergert / Sandhills Agricultural Laboratory / University of Nebraska West Central Research and Extension Center / Nebraska Water Resources Center / United States. Department of the Interior

OCLC:12528325

Soil chemistry