00420nam a2200157   45000010006000000050017000060080041000230200015000640350003000790410007000820500021000891000017001102450067001272600052001943000016002462151520230410105526.0060907n2003    dr                  spa    a970150853X    aES14aHC 79 G489e 2004  aGilpin, Alan1 aEconomía ambiental :bun análisis crítico /cAlan Gilpin  aMéxico :bAlfaomega Grupo Editor,c2003        axvi, 334 p.