Divakar P K & Upreti D K <br/><br/>
Parmeliod lichens in India : A revisionary study .-81-211-0389-4 

 -  Bishen Singh Mahendra Pal Singh, Dehra Dun, India 
<br/><br/><label>ISBN: </label>81-211-0389-4 
<br/><br/><label>Dewey Class. No.: </label>I27.2/P05/B25777