=LDR 22 4500 =001 4360 =082 04$a304.6 HIN =100 1\$aHinrichs, Noel =245 10$aPopulation, environment and people =260 \\$aNew York :$bMcGraw-Hill,$c1971 =650 \0$aBooks =852 \\$bFreeman Library$h304.6 HIN