=LDR 22 4500 =001 4563 =082 04$a519.5 .01 8 =100 1\$aHammond, Robert =245 10$aQuantitative techniques in geography =260 \\$aOxford :$bClarendon Press,$c1974 =650 \0$aBooks =700 1\$aMcCullagh, Patrick =852 \\$bFreeman Library$h519.5 .01 8