TY  - BOOK
AU  - Divakar P K & Upreti D K
TI  - Parmeliod lichens in India : A revisionary study .-81-211-0389-4
SN  - 81-211-0389-4
U1  - I27.2/P05/B25777 
PB  - Bishen Singh Mahendra Pal Singh, Dehra Dun, India
ER  -