000			00479cam a22001571 4500
082			_a628.16 _bRYA _cL-23, P-9
100	1		_aRyan, William John.
245	1	0	_aWater treatment and purification, _cby William J. Ryan.
250			_a2d ed.
260			_aNew York and London, _bMcGraw-Hill book company, inc. _c[c1946]
300			_aix, 270 p. _billus., diagrs. (1 fold.) _c21 cm.
650		0	_aWater _xPurification.
650		0	_aFeed-water purification.
650		0	_aMCE
942			_cBK
999			_c8404 _d8404