TY  - BOOK
AU  - Phondke,Bal
TI  - How?
T2  - Q Series. Title No. 2
SN  - 8172361424
U1  - 500 
PY  - 1997///
CY  - New Delhi
PB  - NISC
KW  - Science-Facts
KW  - Science-Questions and answers
ER  -