TY  - BOOK
AU  - Chhatwal, G.R.
TI  - Encyclopaedic history of science and technology: History of physics
SN  - 8170418453
U1  - REF 609 CHH 
PY  - 1994///
CY  - New Delhi
PB  - Anmol publications pvt ltd
KW  - Encyclopaedic history of science and technology
ER  -