TY  - BOOK
AU  - Conrad,John M.
AU  - Clark,Colin W.
TI  - Natural resource economics : notes and problems
SN  - 0521337690
U1  - HC/59 
PY  - 1987///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Environmental policy.
KW  - Natural resources.
ER  -