Individual onsite wastewater system  proceedings of the fourth national conference 1977 / 
edited by Nina I. McClelland 
 - Ann Arbor :  Ann Arbor Science,  1976 
 - 238 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0250401568 
<br/><br/><label>LCCN: </label>76-050983 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage disposal--Congresses--United States<br/>Sewage disposal--Law and legislation--Congresses--United States