TY  - BOOK
AU  - Prameela. M.
AU  - Mahesh Bilwa. L.
TI  - Sedimentological and palynological studies of ligala-Koyagudem area, Kothsgudem sub basin of Godavari valley coalfilld Andhra Pradesh, India
U1  - 550 PRA 
KW  -  palynological studies
ER  -