Datta, S.C. <br/><br/>
An  Introduction  to  Gymnosperms 

 - 4th /   1992. 
 - Ludhiyana:  Kalyani  Publishers,  1992. 
 - 269p. 
<br/><br/><label>Subjects--Personal Names: </label><br/>Botany.,   Gymnosperms. 
<br/><br/><label>Dewey Class. No.: </label>585