=LDR 22 4500 =001 583 =082 04$a526.022 LAW =100 1\$aLawrence, G. P. R. =245 10$aCartographic Methods =260 \\$aLondon :$bMethuen,$c1971 =650 \0$aBooks =852 \\$bFreeman Library$h526.022 LAW