Yazar
samuel irvin bechdel
16 cilt bulundu.
Arthur Clifton McIntyre, Ernest William Callenbach, Frank Nelson Fagan, Frederick Pattison Weaver, Howard Burton Musser, John Earl McCord, John Edward Nicholas, Lee Oras Overholts, Pennsylvania State College. Agricultural Experiment Station, Samuel Irvin Bechdel · Yayınevi bilinmiyor
720 sayfa · 1933
Agricultural experiment stations
Frank Duane Gardner, Jesse Howard Muncie, John Louis Horsfall, Otto Olson, Pennsylvania State College. Agricultural Experiment Station, Roy David Anthony, Samuel Irvin Bechdel, Walter Spurgeon Beach, William Frear · Yayınevi bilinmiyor
654 sayfa · 1922
Agricultural experiment stations
Charles Franklin Noll, Edgar George Rex, Ernest Leland Nixon, P. T. Kistler, Pennsylvania State College. Agricultural Experiment Station, Samuel Irvin Bechdel, Stuart Ward Frost, Walter Spurgeon Beach · Yayınevi bilinmiyor
674 sayfa · 1925
Agricultural experiment stations
National Research Council (U.S.). Committee on Animal Nutrition, Samuel Irvin Bechdel, Ernest Browning Forbes, C. D. Jeffries · Yayınevi bilinmiyor
44 sayfa · 1924
Kategori yok
Pennsylvania State University. Agricultural Experiment Station, S.I. Bechdel · Yayınevi bilinmiyor
Sayfa sayısı yok · 1922
Kategori yok
Samuel Irvin Bechdel, Pennsylvania State University. Agricultural Experiment Station · Yayınevi bilinmiyor
16 sayfa · 1926
Corn
Samuel Irvin Bechdel, Pennsylvania State University. Agricultural Experiment Station · Yayınevi bilinmiyor
23 sayfa · 1923
Dairy cattle
National Research Council (U.S.). Committee on Animal Nutrition · Yayınevi bilinmiyor
44 sayfa · 1924
Cattle
Pennsylvania State University. Agricultural Experiment Station · Yayınevi bilinmiyor
22 sayfa · 1941
Dairy cattle
Samuel Irvin Bechdel, Pennsylvania State University. Agricultural Experiment Station · Yayınevi bilinmiyor
41 sayfa · 1933
Calves