0.39 Moni Nag J. Michael Bedford, Promiscuity and Fertility: Comments on Greenfield's "The Bruce Effect and Malinowski's Hypothesis on Mating and Fertility", American Anthropologist, 1969.

{ women age population female }	0.39
{ fact point evidence anthropologist }	0.16
{ human behavior evolution social }	0.12
{ number data group table }	0.07