TY  - BOOK
AU  - Ryff, Peter; Platnick, David & Karnas, Joseph
TI  - Electrical mechanies and transformers: Principles and applications
SN  - 0-13-247222-8
U1  - 621.31042 F.R 
PY  - 1982///
CY  - Prentice-Hall, America
ER  -