Yazar
idwal ralph jones
14 cilt bulundu.
Idwal Ralph Jones, Clarence Henry Eckles, Leroy Sheldon Palmer · Yayınevi bilinmiyor
30 sayfa · 1925
Calves
Alfred Weaver Oliver, DeLoss Everett Bullis, Ermine Lawrence Potter, Ernest Herman Wiegand, George Leslie Sulerud, Idwal Ralph Jones, Obil Shattuck, Robert Withycombe, Walter Theodore Johnson · Yayınevi bilinmiyor
770 sayfa · 1930
Beef cattle
Gustav Hans Wilster, Helbert Edgerton Selby, Idwal Ralph Jones, James Niven Shaw, Joseph Wilcox, Louis Gustave Gentner, Ronald Eugene Dimick, Roscoe Elmo Stephenson · Yayınevi bilinmiyor
808 sayfa · 1933
Alfalfa as feed
Daniel Barton DeLoach, Gustav Wesley Kuhlman, Idwal Ralph Jones, Kenneth Wiesner Gray, Reginald Heber Robinson, Wilbur Louis Powers, William Winfield Gorton · Yayınevi bilinmiyor
890 sayfa · 1941
Agriculture
Gustav Wesley Kuhlman, Harold Lympton Ewalt, Harry August Schoth, James Niven Shaw, Ralph Stephen Besse, Roderick Sprague, Walter Theodore Johnson, Wilbur Louis Powers, William Donald Edwards · Yayınevi bilinmiyor
538 sayfa · 1938
Agricultural experiment stations
Charles Vladis Ruzek, David Edmund Stephens, Frank Paden McWhorter, Frederick Earl Price, Halbert Edgerton Selby, Joseph Roy Haag, Milton Nels Nelson, Wilbur Louis Powers, William Henry Dreesen · Yayınevi bilinmiyor
744 sayfa · 1932
Bulls
Idwal Ralph Jones, Oregon Agricultural College. Experiment Station · Yayınevi bilinmiyor
4 sayfa · 1931
Dairy cattle
Idwal Ralph Jones, Oregon State College. Agricultural Experiment Station · Yayınevi bilinmiyor
12 sayfa · 1946
Ruminants
Idwal Ralph Jones, Philip Martin Brandt, Oregon Agricultural College. Extension Service · Yayınevi bilinmiyor
12 sayfa · 1932
Dairy cattle