1.
Letters on Paraguay: Comprising an Account of a Four Years' Residence in That Republic, unde...
by Robertson, John P., Roberts...
ISBN: 9780548289174
List Price: $33.95
2.
More Color Computer Applications: High Resolution Graphics 64K Trs-80 Color Computer Version...
by John P. and Robertson, J. D...
ISBN: 9780471807674
List Price: $39.90
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4.
5.
Art of Glenn Gould : Reflections of a Musical Genius
by Gould, Glenn, Robertson, Jo...
ISBN: 9781894121286
9.
Letters On South America ...
by Robertson, John Parish, Rob...
ISBN: 9781147323818
List Price: $32.75
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Guide to Systems Applications with Programs for TRS-80 Models I and III
by Grillo, John P., Robertson,...
ISBN: 9780697099525
11.
Techniques of BASIC for the IBM Personal Computer
by Grillo, John P., Robertson,...
ISBN: 9780697082763
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15.
More Colour Computer Applications: High-resolution Graphics (Professional Software Series: 1...
by Grillo, John P., Robertson,...
ISBN: 9780471869238
List Price: $14.95
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Introduction to graphics for the IBM Personal Computer (Micropower series)
by Grillo, John P., Robertson,...
ISBN: 9780697099891
List Price: $15.95
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Techniques of BASIC for the TRS-80 Models I and III
by Grillo, John P., Robertson,...
ISBN: 9780697099518
19.
User's Guide with Applications for the IBM Personal Computer
by Grillo, John P., Robertson,...
ISBN: 9780697099853