ZX 80.81 register : Youngs computer register : directory of dealers : classified list of programs, hardware sources, ZX publications, user clubs, features
Young, M. W.
Young, I. G.
Halstead British Heritage Philatelics
[1982]
Cover title
Edited by M.W. Young, I.G. Young
Sinclair ZX80 (Computer)
Sinclair ZX81 (Computer)