共 30 条
[2]
BEACH FRANK A., 1956, JOUR MAMMAL, V37, P177, DOI 10.2307/1376675
[3]
Blaxter KL, 1961, MILK MAMMARY GLAND I, P305
[5]
BRUCE HM, 1961, J REPROD FERTIL, V2, P17, DOI 10.1530/jrf.0.0020017
[6]
CROWCROFT PETER, 1963, PROC ZOOL SOC LONDON, V140, P517