共 8 条
[1]
BRUCE EJ, 1979, EVOLUTION, V33, P1040, DOI 10.1111/j.1558-5646.1979.tb04760.x
[4]
GALLUP GG, 1980, FOLIA PRIMATOL, V33, P210
[5]
LETHMATE J, 1973, Zeitschrift fuer Tierpsychologie, V33, P248
[7]
PATTERSON F, 1978, NATL GEOGR, V154, P438