TY  - BOOK
AU  - Dordick,Herbert S.
TI  - Understanding modern telecommunications
SN  - 0070176620 :
AV  - TK5101 .D64 1986
U1  - 384 19
PY  - 1986///
CY  - New York
PB  - McGraw-Hill
KW  - Telecommunication
N1  - Includes bibliographies and index
ER  -