TY  - BOOK
AU  - THEWLIS (J) Ed
TI  - Enclyclopaedic dictionary of physics Vol 4
U1  - 531/132 
PY  - 1961///
CY  - London
PB  - Pergamon Press.
KW  - Vol
KW  - physics
KW  - Enclyclopaedic
KW  - dictionary
KW  - 4
ER  -