Oregon State College. Agricultural Experiment Station; Hill, D. D. (Donald David), 1894-; Stephens, David E. (David Edmund), 1879-; Richards, D. E. (Dale Everette), 1892-; Hutchison, Roy E. (Roy Emery); Martin, J. F. (James Foster), 1905- (Corvallis, Or. : Agricultural Experiment Station. Oregon State College., 1938-06)
