TY  - BOOK
AU  - Harwick John M
AU  -  Olewiler Nancy D
TI  - Economics of natural resources
U1  - X:271:(G:55), M6 
PY  - 1986///
CY  - New York
PB  - Harper and Row       
KW  - Natural Resources Economics
N1  - Bibliography: P 515-25; appendix P 497-514
ER  -