Investigation of land application of lagoon treated sewage, Snells Beach, Warkworth. 

 - 26. [3], 3 p. :  ill., maps, plan ;  30 cm. 
 - Auckland Regional Water Board technical publication,  no. 21  0110-7143 ; .
 - Technical publication (Auckland Regional Water Board) ;  no. 21. .
<br/><br/> Prepared by S.E. Stretton ... [et al.].  "March 1982."  ISSN stamped on cover. 
<br/><br/>Bibliography: p. 26. 
<br/><br/><label>Source: </label> (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage irrigation--New Zealand--Warkworth
<br/><br/><label>Dewey Class. No.: </label>628.3623099321