TY  - BOOK
AU  - Knudson,Douglas M.
TI  - Outdoor recreation
SN  - 0023653507
U1  - 658.91790973 
PY  - 1980///
CY  - New York
PB  - Macmillan
KW  - Outdoor recreation
KW  - United States
KW  - Management
KW  - Natural resources
N1  - Includes bibliographies and index
ER  -