000 00271nam a2200109Ia 4500
008 221001s2000 xx 000 0 eng d
082 _a910.0015
100 _aHEYWOOD (IAN)
245 0 _aIntroduction to geographical information systems
260 _c2000
942 _2ddc
_cBK
999 _c1342
_d1342