Ludwig Hervey F and others <br/><br/>
Manual of environmental technology in developing countries 
Ludwig Hervey F and others 
 - New Delhi  South Asian        1991 
<br/><br/><label>Standard No.: </label>28710 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>BIOLOGY
<br/><br/><label>Dewey Class. No.: </label>G:55.1(Y:4), N1.1-.2