TY  - BOOK
AU  - Mcgraw-Hill
TI  - Mcgraw-hill encyclopedia of science and techenology 
SN  - 0-07-909206-3
U1  - 603 
PY  - 1992///
CY  - New Delhi
PB  - Mcgraw-Hiil Pub
KW  - General
ER  -