Productive and unproductive types of apple trees : studies in orchard management /
Sax, Karl
Productive and unproductive types of apple trees : studies in orchard management / Sax, Karl and John W. Gowen - Washington : American Genetics Association, 1921 - 291-300 p. : ill. ; 28 cm - The Journal of heredity ; 12 .
Productive and unproductive types of apple trees : studies in orchard management / Sax, Karl and John W. Gowen - Washington : American Genetics Association, 1921 - 291-300 p. : ill. ; 28 cm - The Journal of heredity ; 12 .