TY  - BOOK
AU  - Middleton, Robert G.
AU  - xx, 686 p.
AU  - Title
TI  - Digital Communications
SN  - 0672232596
PY  - 1976///
CY  - Indianapolis,
PB  - T.Audel & Co.
KW  - Radio -  Amateurs' manuals
N1  - Includes index
ER  -