=LDR 00000nam a2200000ui 4500 =001 5499 =008 250530s1981\\\\xx\|||||||||||||||||eng\d =082 04$a621.36 78 =245 00$aTerrain analysis and remote sensing =260 \\$aBoston, MA :$bAllen & Unwin,$c1981 =700 1\$aTownshend, John R. G. =852 \\$bFreeman Library$cBooks$h621.36 78