共 5 条
[1]
BARBER GW, 1942, USDA657 CIRC
[2]
CARRUTH LA, 1940, NEW YORK AGR EXPT ST
[3]
FULTON BB, 1946, NC AGR EXPT STA PROG, V5, P11
[4]
PEPPER BB, 1941, NEW JERSEY AGR EXPT
[5]
1945, 68TH N CAR AGR EXPT, P21