TY  - JOUR
A1  - Peccei, J.S.
T1  - A critique of the grandmother hypotheses: Old and new
Y1  - 2001
DO  - 10.1002/ajhb.1076
JF  - American Journal of Human Biology
VL  - 13
IS  - 4
SP  - 434
EP  - -452

ER  -