TY  - BOOK
AU  - Dua, Shyam
AU  - Kohli, K. S
AU  - Makkar, Viny
TI  - Science & technology
SN  - 9788130400877
U1  - 001 DUA 
PY  - 2005///
CY  - New Delhi
PB  - Tiny Tot Publications
KW  - General Knowledge
ER  -