TY  - BOOK
T1  - The genesis of animal play :testing the limits /
DA  - c2005.
CY  - Cambridge, Mass. :
AU  - Burghardt, Gordon M.,
CN  - QL763.5
CN  - QL763.5
PB  - MIT Press,
PP  - Cambridge, Mass. :
PY  - c2005.
N1  - "A Bradford book."
ID  - 295876
KW  - Play behavior in animals.
KW  - Play.
KW  - Behavior evolution.
SN  - 0262025434 (alk. paper)
TI  - The genesis of animal play :testing the limits /
ER  -