Communicating with Crosstalk XVI and Crosstalk Mark 4 - Schaffer, Clifford A. (Blue Ridge Summit, PA Tab Books, 1988)
On t.p. the registered trademark symbol "R" is superscript following "Crosstalk" in the title.
Includes index.
Keywords: Crosstalk XVI (Computer file).; Crosstalk Mk. 4 (Computer file).