000			00412nam a22001697a 4500
015			_a4912
080			_a550.7 _bORD
100			_aOrdway, R. J.
245			_aEarth science and the environment
260			_aD. Van nostrand company _bNew york _c1974
300			_a486p.
852			_a2R 1-3
999			_c2326 _d2326