00546cam a2200181   4500020001500000040000800015082002600023100002100049245006300070260004200133300002700175490003300202500005700235650001600292650001500308650001900323700002200342  a0716706806  cDLC00a301 FRE 1970 A089 Or.1 aEhrlich, Paul R.10aPopulation resources environment;bissues in human ecology  aSan Francisco,bW. H. Freemanc[1970]  a383 p.billus.c26 cm.0 aA Series of books in biology  aThird ed. published in 1977 under title: Ecoscience. 0aPopulation. 0aPollution. 0aHuman ecology.1 aEhrlich, Anne H.,