共 23 条
[2]
ALSHEIKHLY FA, 1976, THESIS U GUELPH
[3]
BERGELAND ME, 1972, J AM VET MED ASSOC, V160, P568
[4]
Duncan C.L., 1975, MICROBIOLOGY 1975, P283
[5]
erny M., 1971, DEMOGRAFIE, V13, P109
[6]
FATHALLA MA, 1975, CAN J COMP MED, V39, P457
[7]
FIELD H. L, 1959, JOUR HYG, V57, P81
[8]
HAUSCHILD AHW, 1971, MICROBIAL TOXINS B A, V2, P159
[9]
Humson G.L., 1967, ANIMAL TISSUE TECHNI