Wooldridge, David D. <br/><br/>
Effects of sludge irrigation on three pacific Northwest forest soils / 
by David D. Wooldridge and John D. Stednick 
 - Washington, D.C. :  U.S. Government Printing Office,  1980 
 - xiv, 170 p. ;  30 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage--Purification<br/>Sewage sludge
<br/><br/><label>Dewey Class. No.: </label>628.3