00261nam a2200109   450000100070000000500170000700800360002410000150006024500150007525000110009026400500010100886520260807101534.0260101s1982    pe      000 0 spa  d1 aPeter Farb10aEcología  a2a ed. 1aMéxico D. F.bTime Life Internationalc1982