=LDR 00000nam a2200000ui 4500 =001 4935 =008 250530s1978\\\\xx\|||||||||||||||||eng\d =082 04$a500.2 DAV =100 1\$aDavidson, Donald A. =245 10$aScience for physical geographers =260 \\$aLondon :$bEdward Arnold,$c1978 =852 \\$bFreeman Library$cBooks$h500.2 DAV