TY  - BOOK
AU  - Encyclopoedia Britannica Put . Ltd.
TI  - Britannica ready reference  encyclopedia .  vol  : 9
SN  - 8181310985 
U1  - 003 
PY  - 1994///
CY  - New Delhi
PB  - Encyclopaedia Britannica Pvt Ltd
KW  - Systems
ER  -