00276nam a2200097Ia 4500008004100000082001300041100003400054245006300088260002000151365000700171230302s9999    xx            000 0 und d  a005.14LO  aLO  (C.P)/ YEUNG (Albert K.W)  aConcepts and Techniques of Grographic Information Systems   aNEW DELHIbPHI   cRS