00602nam0 2200217 450 00001652820080925131715.0052164974920080925d1999----km-y0itay50------baengGBy-------001yyResource economicsJon M. ConradCambridgeCambridge university press1999X, 213 p.23 cmConrad,Jon M.464813ITUNIPARTHENOPE20080925RICAUNIMARC000016528721/49091NAVA2Resource economics207002UNIPARTHENOPE