000			00320nam a2200157Ia 4500
082			_a304.2 _bIv93.ER
100			_aIvany, J. W. G.
245			_aEnvironment _b
260			_aMassachusetts _bAddison-Wesley _c1972
300			_axi, 287p.
500			_a
690			_a
700			_a
964			_a _b _c _d _e _f _g
921			_a46
999			_c46 _d46