Helmet, Fritz <br/><br/>
Dictionary of Environmental Chemistry / 
by Fritz Helmet 
 - New Delhi:  Sarup and Sons,  2005 
 - p.248 
<br/><br/><label>ISBN: </label>8176256056 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Biology <br/>Ecology, Environmental Chemistry<br/>Dictionaries And Encyclopedias
<br/><br/><label>Dewey Class. No.: </label>577.1403  / HEL-D