=LDR 00000nam a2200000ui 4500 =001 5504 =008 250530s1965\\\\xx\|||||||||||||||||eng\d =082 04$a526.9 GRE =110 2\$aGreat Britain Ministry of Defence =245 10$aTextbook of Topographical Surveying =260 \\$aLondon :$bH. M. S. O.,$c1965 =852 \\$bFreeman Library$cBooks$h526.9 GRE