2.
Basics of Timex Sinclair 1500/1000 BASIC (Bookware)
by Wolach, Allen H.
ISBN: 9780835903479
List Price: $9.95
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Basics of Timex-Sinclair 1000, ZX-81 BASIC
by Wolach, Allen H.
ISBN: 9780835904254
List Price: $19.00
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Basics of Timex-Sinclair 1000, ZX-81 BASIC
by Wolach, Allen H.
ISBN: 9780835904247
List Price: $9.95
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Programming schedules of reinforcement with integrated circuits
by Allen H Wolach
ISBN: 9780932810113