TY  - BOOK
AU  - Koritsky,Yu, x
AU  - x
TI  - Electrical engineering materials: a text book 
SN  - x   
U1  - 621.315/KOE 
PY  - 1970///
CY  - Moscow
PB  - Mir Pub.
KW  - electric engineering
KW  - Engineering
ER  -