HOBSON N. P. <br/><br/>
WAST TREATMENT IN AGRICLTURE  

 - LONDON  APPLIED SCIENCE   1977 
<br/><br/><label>ISBN: </label>0 85334 736 0 
<br/><br/><label>LC Class. No.: </label>631.86102/HOB  / 3 
<br/><br/><label>Dewey Class. No.: </label>631.86102/HOB  / 3