Bir, S.S. <br/><br/>
Chromosome Atlas of the Indian Pteridophytes (1951-2009 : An Index to chromosome numbers of ferns and fern-allies of the present-day political India (with information about the related taxa from adjacent regions of Pakistan, Nepal, and Bhutan) 
S.S. Bir and S.C. Verma 
 - Dehra Dun  Bishen Singh Mahendra Pal Singh  2010 
 - xx, 346 p.  29 cm 
<br/><br/><label>ISBN: </label>9788121107723 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pteridophyta <br/>Plant chromosome numbers<br/>India
<br/><br/><label>Dewey Class. No.: </label>587