=LDR 22 4500 =001 5116 =082 04$a551.3 GER =100 1\$aGerrard, John =245 10$aSoil geomorphology =260 \\$aLondon :$bChapman & Hall,$c1992 =650 \0$aBooks =852 \\$bFreeman Library$h551.3 GER