共 49 条
[41]
SIMPSON MJA, NATURE
[42]
SINGH O. N., 1965, INDIAN J VET SCI ANIM HUSB, V35, P245
[44]
Teitelbaum M S, 1970, J Biosoc Sci Suppl, V2, P61
[45]
Trivers R., 1972, PARENTAL INVESTMENT, DOI DOI 10.1002/AJPA.1330400226
[48]
QUESTION OF ADAPTIVE SEX-RATIO IN OUTCROSSED VERTEBRATES
[J].
PROCEEDINGS OF THE ROYAL SOCIETY SERIES B-BIOLOGICAL SCIENCES,
1979, 205 (1161)
:567-580
[49]
FACTORS AFFECTING BIRTH-WEIGHT OF SANTA-GERTRUDIS CALVES
[J].
ANIMAL PRODUCTION,
1974, 18 (JUN)
:231-236