000			00268nam a2200097 4500
999			_c334533 _d334533
082			_a550 _bHEL.G
100			_aHeller, Robert L.
245			_aGeology and Earth Sciences Sourcebook _cHeller, Robert L.
260			_aNew York _c1962 _bHolt, Rinhart and Winston
942			_cBK