'ZX81 BASIC Programming' Vintage Computer Book Sinclair 2nd Edition 1981

Programming and Problem Solving with Pascal hard cover book J.Wiley 2nd Edition

Computer Spacegames Vintage Usborne Programming Book BASIC Games for Micro

Hewlett-Packard HP-12C Calculator Owner’s Handbook And Problem-Solving Guide

Commodore PET/CBM Personal Computer Guide 2nd Edition w Programming Manual 1978

HP-12C Calculator Owner's Handbook and Problem Solving Guide Vtg 1982 Edition 3

Sinclair ZX81 BASIC Programming Manual Book, 2nd Edition

How to Model It: Problem Solving for the Computer Age (1994 Paperback) Rare