TY  - BOOK
AU  - Butler,George D.
ED  - National Recreation Association.
TI  - Playgrounds, their administration and operation
AV  - GV423 .B8 1950
PY  - 1950///
CY  - New York
PB  - Barnes
KW  - Playgrounds
N1  - Bibliography: p. 447-453
ER  -