00391nam a2200133Ia 450000500170000000800410001702000180005808200180007610000450009424500520013926000270019130000120021865000270023020250401140100.0231217s9999    xx            000 0 und d  a9788131407257  a003  JAI;1  R  aJain, Ravi Kumar B. Saxena, Pragathi ed. 0aGeographic information system : an introduction  c2007bIcfaiaHyderabad  axi, 239  aGeographic,information