Thresh, John C. <br/><br/>
A Simple method of water analysis with sections on the analysis of sewage effluents and on the purification of water by means of chlorine:  sepecially intended for the use of medical officers of health, sewage works managers, and other sanitary officials 

 - 9th ed. 
 - London:  J. & A. Churchill,  1918 
 - 69p.;  17cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage - Analysis<br/>Water - Analysis<br/>Water - Purification - Chlorination
<br/><br/><label>National Library of Medicine Call No.: </label>QD142