共 19 条
[2]
[3]
[4]
FELDMAN EC, 1996, CANINE FELINE ENDOCR, P752
[5]
[6]
[8]
[9]
LEVITT L, 1992, CAN VET J, V33, P660
[10]
LEWIS DD, 1987, COMP CONT EDUC PRACT, V9, P523

