Series:

Thumbnail	Title	Series Number	Date	Description
	Audiocassette AC1290/R - D308/AC8/1989		1989
	Track 1
	Track 2
	Audiocassette AC1291 - B881/AC		1990
	Track 3
	Track 4
	Audiocassette AC1292 - B881/AC		1990
	Session 1: Electronic Mail
	session 2: handshakes and state diagrams
	Session 3: Flow Control And Error Recovery