000 00300nam a2200121Ia 4500
020 _a9788120339149
082 _a910.285
100 _aC.P.LO.ALBERT K.W. YEUNG
245 _aCONCEPTS AND TECHNIQUES OF GEOGRAPHIC INFORMATION SYSTEMS
250 _a2ND
260 _aNEW DELHI
_b PHI
_c2007
942 _cBK
999 _c2228
_d2228