TY  - SER
ED  - International Telephone and Telegraph Corporation.
TI  - Reference data for radio engineers
AV  - TK6552 .F4
U1  - 621.384083 
PY  - 1975///
CY  - New York
PB  - Haward W. Sons & Co., 
KW  - Radio
KW  - Tables
KW  - Radio engineering
ER  -