共 10 条
[1]
BISHOPP FC, 1939, USDA1097 FARM B
[2]
BITNEY LL, 1975, NEBR DEP AGRIC ECON, V63, P51
[4]
CHENG TH, 1958, J ECON ENTOMOL, V51, P278
[5]
CONROY JA, 1972, STUDIES STATUS CONTR
[6]
CROOKSHANK HR, 1976, J ANIM SCI, V43, P280
[9]
MOOREHOUSE DE, 1972, AUST VET J, V48, P644
[10]
RICHEY EJ, 1976, J ANIM SCI, V43, P301