Agarwal, V P; Sharma, V K <br/><br/>
Advancement of ecology 

 -  Today & Tomorrows Printers & Publishers, New Delhi  1979 
 - 218 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology; Biology
<br/><br/><label>Dewey Class. No.: </label>574.5  AGA-A