TY  - BOOK
AU  - Witts, Alfred T.
TI  - Radio Upkeep and Repairs a Practical Handbook on Servicing Principles and Receiver Maintenance 
U1  - 621.3841802 
PY  - 1957///
CY  - London : 
PB  - Isaac Pitman, 
KW  - Radio Repairing Handbooks Manuals
N1  - NN
ER  -