Shukla, R. S. <br/><br/>
A Textbook of Plant Ecology :  Including Ethnobotany and Soil Science / 
Shukla, R. S. 
 - 11th ed. 
 - viii,544p. 
<br/><br/><label>ISBN: </label>8121905486 
<br/><br/><label>Dewey Class. No.: </label>581.7