Eighty-first Annual Report of the Pennsylvania Agricultural Experimental Station, July 1, 1967 to June 30, 1968

Auteur : Donald R. Street, Edgar John Battison, Harold Gene Marshall, Harold H. Taylor, James C. Barron, Neil B. Gingrich, Rodney Dwain Horrocks, Pennsylvania State University. Agricultural Experiment Station

Date de publication : 1968

Éditeur : Pennsylvania State University, College of Agriculture, Agricultural Experiment Station

Nombre de pages : 22