Dhaliwal , G.S. . <br/><br/>
Principles of Agricultural Ecology /  Textual Documents 
G.S. Dhaliwal & D.S. Kler. 
 - 1st ed / 
 - Bombay :  Himalaya Publishing ,  1995. 
 - xv, 410p. ; 
<br/><br/>Index 
<br/><br/><label>ISBN: </label>81-7493-010-8  rs. 80.00 
<br/><br/><label>Subjects--Index Terms: </label>Botany Ecology Agriculture G-Botany 
<br/><br/><label>Dewey Class. No.: </label>581.5  / Dh 536 Pr