Media type: E-Article Title: Sexual swelling, receptivity, and grouping of wild pygmy chimpanzee females at Wamba, Zaïre Contributor: Furuichi, Takeshi imprint: Springer Science and Business Media LLC, 1987 Published in: Primates Language: English DOI: 10.1007/bf02381014 ISSN: 0032-8332; 1610-7365 Origination: Footnote: