TY  - BOOK
AU  - Clark,Roger N.
AU  - Stankey,George H.
TI  - The recreation opportunity spectrum : a framework for planning, management, and research
U1  - 634.92 
PY  - 1979///
CY  - Washingtion
PB  - United States Government Printing Office
KW  - Forest management
KW  - Land use
ER  -