TY  - BOOK
AU  - Heldman,Robert K.
TI  - ISDN in the information marketplace
SN  - 0830693157
PY  - 1988///
CY  - Blue Ridge Summit, PA : 
PB  - Tab Professional and Reference Books, 
KW  - Integrated services digital networks
N1  - Includes index; Bibliography: p. 306-325
ER  -