TY  - BOOK
AU  - Derfler,Frank J.
TI  - Microcomputer data communication systems
PY  - 1982///
CY  - Englewood Cliffs, N.J.
PB  - Prentice-Hall
KW  - Data transmission systems
KW  - Microcomputers
N1  - At cover: a guide to the operations of modems, terminals, electronic bulletin boards, and information utilities for users of TRS-80, Apple II, Heath-89, and other systems; 'A Spectrum Book'
ER  -