TY  - BOOK
AU  - Noll, A Michael
AU  - Artech house
TI  - Introduction to Telephones and Telephone System
U1  - 621.395 
PY  - 1986///
CY  - Norwood
PB  - Artech House
KW  - Telephone and Telephohe System
N1  -  Bibliog on p. 171n- 72
ER  -