TY  - BOOK
AU  - Dordick,Herbert S.
TI  - Understanding modern telecommunications/ 
SN  - 0070176620
PY  - 1986///
CY  - New York : 
PB  - McGraw-Hill, 
KW  - Telecommunication
N1  - Abstracts Includes bibliographies and index; Includes bibliographies and index
ER  -