=LDR 22 4500 =001 2273 =082 04$a551.4 COO =100 1\$aCooke, R. U. =245 10$aGeomorphology in Environmental Management: an introduction =260 \\$aOxford :$bClarendon Press,$c1974 =650 \0$aBooks =700 1\$aDoornkamp, John C. =852 \\$bFreeman Library$h551.4 COO