TY  - BOOK
AU  - Dunbar, Robin
TI  - How many friends does one person need?: :dunbar's number and other evolutionary quirks
SN  - 978-0-571-25342-5
U1  - 599.938 D898 2010 
PY  - 2010///
CY  - London
PB  - Faber and Faber Ltd.
KW  - Psychology
KW  - Social Psychology
ER  -