000			00298nam a22001217a 4500
999			_c332225 _d332225
020			_a9788131731932
082			_a910.285 _bHEY.I
100			_aIan Heywood and others
245			_aIntroduction to Geological Information System
250			_a3rd
260			_aNewDelhi _bPearson _c2006
942			_cBK