00469    a2200157   4500020001800000082001700018100001400035245006200049250000800111260005100119300002100170440004700191650003500238650001400273700002400287  a9788120339149  a910.285bLOC  aLo, C. P.  aConcepts and techniques of geographic information systems  a2nd  aNew DelhibPHI Learning (Pvt) Ltd.c2007g2007  a544p.bIllc28cm  aPH series ingeographic information science  aGeographic information systems  aGeography  aYeung, Albert K. W.