28.
Guide to Systems Applications with Programs for TRS-80 Models I and III
by Grillo, John P., Robertson,...
ISBN: 9780697099525
29.
Techniques of BASIC for the IBM Personal Computer
by Grillo, John P., Robertson,...
ISBN: 9780697082763
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Letters on Paraguay, by J P and W P Robertson
by Robertson, John Parish, Rob...
ISBN: 9781143951909
List Price: $33.75
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Letters on South America; Comprising Travels on the Banks of the ParanĂ¡ and Rio de la Plata ...
by Robertson, John Parish
ISBN: 9781150873843
List Price: $15.37
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38.
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
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Techniques of BASIC for the TRS-80 Models I and III
by Grillo, John P., Robertson,...
ISBN: 9780697099518
42.
User's Guide with Applications for the IBM Personal Computer
by Grillo, John P., Robertson,...
ISBN: 9780697099853
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Cartas de Sudamerica (Spanish Edition)
by J.P. y W. P. Robertson , J....
ISBN: 9789500421119
List Price: $10.80