TY  - BOOK
AU  - McGraw Hill Company, 
TI  - ENCYCLOPEADIA  VOL-1
U1  - 809.2 
PY  - 1972///
CY  - New York
PB  - Mcgraw-Hill Book Company
KW  - Post Graduate Reference
KW  - literature
KW  - history ,description and criticism
KW  - englishPhysics
ER  -