TY  - BOOK
AU  - Charles I. Hellman
TI  - Elements of radio
U1  - 621.384 
PY  - 1956///
CY  - London
PB  - D. Van Nostrand Co. Inc
N1  - Charles I. Hellman: Elements of radio.  (3rd Edition)  London.  D. Van Nostrand Co. Inc, 1956.--(621.384HEL)
ER  -