TY  - BOOK
AU  - Monseth, I.T.
TI  - Relay Systems Throry & Applications
U1  - 621.383 
PY  - 1935///
CY  - New York.
PB  - McGraw Hill 
KW  - MCE
N1  - 0; 0; 0; 621_383000000000000_MRN
ER  -