TY  - BOOK
AU  - Johnson Robecca L
AU  -  Johnson Gary V
TI  - Economic valuation of natural resources: Issues th   
T2  - Social Behavior and Natural Resources Series
U1  - X:271:(G:55), N0 
PY  - 1990///
CY  - Boulder
PB  - Westview Press         
KW  - Natural Resources Economics
N1  - Bibliography chapterwise
ER  -