Design manual :    onsite wastewater treatment and disposal systems /  
U.S. Environmental Protecton Agency. 
 - Washington, D.C. :    U.S. Environmental Protection Agency,    1980. 
 - xvii, 391 p. :    ill. ;    28 cm. 
<br/><br/>  EPA/625/1-80/012   October, 1980. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Sewage disposal plants.
<br/><br/><label>Dewey Class. No.: </label>363.7284