TY  - BOOK
AU  - Witts,Alfred Thomas
TI  - Worked radio calculations: graded practical examples for radio service engineers, wirless operators, and students of radio, 
U1  - 621.384 
PY  - 1943///
CY  - London
PB  - Sir, I. Pitman & sons, ltd.
KW  - Radio
KW  - MCE
ER  -