共 16 条
[1]
COOLEY RA, 1944, 1 AM MIDL NAT MON
[5]
HOOKER WA, 1912, 106 USDA BUR ENT B
[6]
IMES M, 1918, 980 USDA FARM B
[7]
Kemper H. E., 1947, NORTH AMER VET, V28, P672
[8]
KEMPER HE, 1953, 980 USDA FARM B
[10]
MCINTOSH A, 1956, USDA AGR YB, P157