TY  - CHAP
A1  - Mace, R.
A1  - Sear, R. 
T1  - Are humans cooperative breeders?
Y1  - 2005
A3  - Voland, E.
A3  - Chasiotis, A.
A3  - Schiefenhoevel, W.
T2  - Grandmotherhood: The Evolutionary Significance of the Second Half of Female Life
CY  - New Brunswick
PB  - Rutgers University Press
SP  - 143
EP  - -159

ER  -