TY  - BOOK
AU  - Lehman,Maxwell
AU  - Burke,Thomas J.M.
TI  - Communication technologies and information flow
SN  - 0080271693
U1  - 621.38 19
PY  - 1981///
CY  - New York
PB  - Pergamon Press
KW  - Telecommunication
N1  - Includes bibliographical references and index
ER  -