共 20 条
[4]
COOK RM, 1967, J ANIM SCI, V26, P1486
[5]
COOK RM, 1969, E668 MICH STAT U EXT
[6]
DAVIES JE, 1969, LANCET, V2, P7
[7]
DUGGAN RE, 1969, PESTIC MONIT J, V2, P153
[8]
Fries G F, 1969, Bull Environ Contam Toxicol, V4, P320, DOI 10.1007/BF01560962
[9]
FRIES GF, 1969, J DAIRY SCI, V52, P910
[10]
HEATH RG, NATURE, V224, P57