none 10.2307/j.ctvjf9xr4 JSTOR JSTOR 1121 107765636 3355312 20190626202805971 10.2307 2019-06-26T20:29:56Z 2019-06-20T21:39:18Z 72 10.4159/9780674028449 Christopher Boehm Hierarchy in the Forest The Evolution of Egalitarian Behavior 06 30 2009 9780674028449 9780674390317 Harvard University Press 10.2307/j.ctvjf9xr4 http://www.jstor.org/stable/10.2307/j.ctvjf9xr4