00496nam a22001337a 4500020001800000082002000018100002100038245010600059260005500165300004000220500006100260650001900321700002200340  a0-7167-0680-6  a304.2 E337 19701 aEhrlich, Paul R.1 aPopulation resources environment :bissues in human ecology /cPaul R. Ehrlich [and] Anne H. Ehrlich.  aSan Francisco :bW.H. Freeman and Company,cc1970.  a383 p. :bfigs. and tables ; 26 cm.  aIncludes bibliographical references, glossary and index.14aHuman ecology.1 aEhrlich, Anne H.