TY  - CHAP
A1  - Turke, P.W. 
T1  - Helpers at the nest: Childcare networks on Ifaluk
Y1  - 1988
A3  - Betzig, L.
A3  - Borgerhoff Mulder, M.
A3  - Turke, P. 
T2  - Human reproductive behaviour: A Darwinian perspective
CY  - Cambridge
PB  - Cambridge University Press

ER  -