TY  - BOOK
T1  - Recreation current selected research
A2  - Humphrey, Fred N.
A2  - Humphrey, James H.
LA  - English
PP  - New York
PB  - AMS Press
YR  - 1989
UL  - https://tuklas.up.edu.ph/Record/UP-99796217602716694
CN  - GV 191.6 R43
KW  - Outdoor recreation : Study and teaching.
ER  -