x  x <br/><br/>
Recent advances in Botany ;  Prof. P. P.N. Mehra commemorative volume. 

 - x 
 - Delhi  Bishen singh Mahendra Pal Singh  1976 
 - xvi, 405 
<br/><br/>
<br/><br/><label>ISBN: </label>x  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany Botany 
<br/><br/><label>Dewey Class. No.: </label>581/KAR