TY  - BOOK
AU  - Clawson,Marion, x
AU  - x
TI  - Economics of outdoor recreation: x
SN  - x
U1  - 338.5/CLE 
PY  - 1978///
CY  - Baltimore
PB  - John Hopkins
KW  - Economics
KW  - Prices
N1  - Includes
ER  -