TY  - BOOK
AU  - DYUTIMAN BHATTACHARYA
AU  - MAITREYI CHAKRABORTY
TI  - ADHUNIK BHUJALBIDYA O SAMUDRABIDYA
U1  - 551.4 
PY  - 2013///
CY  - KOLKATA
PB  - NAVODAYA PUBLICATIONS
ER  -