TY  - GEN
ID  - cogprints843
UR  - http://cogprints.org/843/
A1  - Humphrey, Nicholas
Y1  - 1997///
N2  - None
KW  - altruism
KW  -  kin selection
KW  -  reciprocal altruism
TI  - Varieties of altruism - and the common ground between them
SP  - 199
AV  - public
EP  - 209
ER  -

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