TY  - BOOK
AU  - Ray, Priyadaranjan. and 
AU  - Sen, S. N. 
TI  - The cultural heritage of India / 
U1  - 954 23
PY  - 1986///.
CY  - Calcutta : 
PB  - The Ramakrishna Mission, 
KW  - Science and technology in modern India.
KW  - Geology and Mining.
KW  - Astronomy.
ER  -