=LDR 22 4500 =001 945 =082 04$a526.028 MAT =100 1\$aMather, P. M. =245 10$aComputer applications in geography =260 \\$aChichester :$bWiley,$c1991 =650 \0$aBooks =852 \\$bFreeman Library$h526.028 MAT