00346nam a22001457a 4500003000400000005001700004008004100021020001800062040000700080082001200087100001600099245005100115260002600166300000800192OSt20211202125521.0211202b        |||||||| |||| 00| 0 eng d  a9780199228621  chu  a910.285  aa,mcdonnell  aprinciples of geographical information systems  anew delhibhallc1998  a333