TY  - BOOK
AU  - Aldis,Owen
TI  - Play fighting
SN  - 0120494507
PY  - 1975///
CY  - New York
PB  - Academic Press
KW  - Psychology, Comparative
KW  - Play
KW  - Fighting (Psychology)
N1  - Includes index; Bibliography: p. 303-311
ER  -