00785nam0-22002891i-450-99000370651040332120001010071133089000370651FED01000370651(Aleph)000370651FED0100037065120000920d1994----km-y0itay50------baitay-------001yyEnvironmental economicsan introductionBarry C. FieldSingaporeMc Graw-Hill International editionsc1994482 p.23 cmField,Barry C.140637ITUNINARICAUNIMARCBK990003706510403321Q0.256518DECTSDECTSEnvironmental economics74570UNINAING01