=LDR 22 4500 =001 3566 =082 04$a778.3 DIC =100 1\$aDickinson, Gordon Cawood =245 10$aMaps and air photographs =260 \\$aLondon :$bEdward Arnold,$c1979 =650 \0$aBooks =852 \\$bFreeman Library$h778.3 DIC