TY  - BOOK
AU  - Kalpana Mitra
AU  - Purabi Sengupta
AU  - Jyotirmay Sen
TI  - Prakritik bhugol (jalbayubidya,mrittika bhu-bidya o jeebbhugol), vol-2
SN  - 8127231061
U1  - 904.5 
PB  - Kalyani Publishers
ER  -