TY  - BOOK
AU  - CRAWLEY,CHETWODE
TI  - FROM TELEGRAPHY TO TELEVISION: THE STORY OF ELECTRICAL COOMUNICATIONS
U1  - PE84 
PY  - 1931///
CY  - LONDON
PB  - FREDERICK WARNE &CO.LTD
N1  - PE mean Physics, Electricity and Magnetism Page 450-456 in A to Z Register (Acc. No. Pe1-Pe205)
ER  -