00273    a2200109   4500020001500000082001300015100002100028245003500049260003200084300002200116650002500138  a8299192838  a910bBER  aBernhardsen, Tor  aGeographic information systems  aNorwaybViak ITc1992g1992  axiv, 318p.c24cm.  aGeography and travel