Bolton, R.L. <br/><br/>
Sewage treatement:  basic principles and trends/ 
R.L. Bolton and L. Klien 
 - 2nd.ed. 
 - London:  Butterworths,  c1971 
 - 256 p.:  ill.;  21 cm. 
<br/><br/>Includes bibliographical references index 
<br/><br/><label>ISBN: </label>0408347805  £ 5.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewerage<br/>Sewage--Purification<br/>Sewage disposal<br/>Drainage, House<br/>Septic tanks
<br/><br/><label>Dewey Class. No.: </label>628.3