Yazar
Karl Gertel
16 cilt bulundu.
Hugh Hill Wooten, John Dewitt Rush, Jules V. Powell, Norman Townshend-Zellner, Raymond Peter Christensen, Ronald Lester Mighell, Roy Arthur Ballinger, Waverley T. Chumney, William S. Folkman, Lawrence Arthur Jones · Yayınevi bilinmiyor
596 sayfa · 1962
Acreage allotments
Beatrice H. Krauss, David Tin Ei Lum, Gerald Martin Jenkins, Jack Shigeru Tanaka, James Carl Gilbert · Yayınevi bilinmiyor
496 sayfa · 1971
Aeronautics, Commercial
Hugh Hill Wooten, John Dewitt Rush, Jules V. Powell, Norman Townshend-Zellner, Raymond Peter Christensen, Ronald Lester Mighell, Roy Arthur Ballinger, Waverley T. Chumney, William S. Folkman, Lawrence Arthur Jones · Yayınevi bilinmiyor
54 sayfa · 1962
Acreage allotments
Karl Gertel, Pennsylvania State University. Agricultural Experiment Station · Yayınevi bilinmiyor
37 sayfa · 1959
Farm management
United States. Department of Agriculture. Economic Research Service. Farm Economics Division, Karl Gertel · Yayınevi bilinmiyor
56 sayfa · 1962
Water use