TY  - BOOK
AU  - Gumhalter, Hans
TI  - Power Supply Systems in Communications Engineering 
SN  - 8122400981
U1  - 621.38 
PY  - 1984///
CY  - New Delhi : 
PB  - Wiley Eastern, 
KW  - Communication Power Supply
N1  - NN; Pt. 1. Principles
ER  -