0.31 Monique Borgerhoff Mulder Margaret George-Cramer Jason Eshleman Alessia Ortolani, A Study of East African Kinship and Marriage Using a Phylogenetically Based Comparative Method, American Anthropologist, 2001.

{ data sample variables societies }	0.31
{ social group groups political }	0.12
{ university press american pp }	0.10
{ human genetic populations modern }	0.08