Barbara Ann Anderson / Betty Thomas Richardson / C. R. Lockard / Elsie Halstrom Dawson / Fred Charles Simmons / George Meredith Jemison / Raymond Frank Taylor / Anson William Lindenmuth / Elbert Luther Little / Gladys L. Gilpin / J. A. Putnam / Howard Reynolds / John James Keetch / Roswell Donald Carpenter

UIUC:30112019247342

Agricultural colleges

Maryland. State Department of Forestry / Fred Benjamin Trenk

OSU:32435003899648

Forests and forestry

Fred Benjamin Trenk / Joseph Zagorski

WISC:89098824212

Forests and forestry

Fred Benjamin Trenk / William H. Brener / University of Wisconsin. Extension Service

WISC:89044374981

Forests and forestry

Fred R. David

PSU:000023607262

Business & Economics

Fred R. David

0023278684 / 9780023278686

Business & Economics

Arthur Robert Albert / Burr Abraham Beach / Charlotte Clark Buslaff / Clara E. Jonas / D. Dave Nusbaum / Edmond Joseph Delwiche / Edward Marlborough Searls / F. H. Turner / Fred Benjamin Trenk / George McSpadden Briggs / George Werner / Gladys Meloche / Gladys Stillman / Gustav Herman Rieman / H. C. Jackson / J. J. Lacey (Jr.) / James Guerry Moore / James Halpin / Margaret P. McCordic / Martin P. Andersen / Mary A. Brady / Norman Percy Neal / University of Wisconsin--Extension / University of Wisconsin. University Extension. Cooperative Extension Programs / Wealthy M. Hale / William Peter Mortenson

WISC:89038532990

Agricultural conservation

Fred B. Trenk

OCLC:1039883348

University of Wisconsin. Extension Service / Fred B. Trenk / Joseph Zagorski

OCLC:632759721

University of Wisconsin. Extension Service / Fred B. Trenk

OCLC:632759280

Fred B. Trenk

OCLC:1391941839

Fred B. Trenk

WISC:89034617605

Maple syrup

Fred B. Trenk

OCLC:1039853889

Fred B. Trenk

OCLC:1039864710

Fred B. Trenk

OCLC:1039847811

Fred B. Trenk

OCLC:1039881437

Harold F. Scholz / Fred B. Trenk

OCLC:1157970349

Agroforestry

Joseph H. Stoeckeler

OCLC:1039856827