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BASIC/Visual Basic 
ZX81 BASIC Programming (Steven Vickers) BASIC, the Elementary Algebraic Language
Pick/BASIC: A Programmer's Guide (Jonathan E. Sisk) Programmed Lessons in Quick Basic (QBasic)
Introducing Visual Basic 2005 for Developers Upgrading Visual Basic 6.0 to Visual Basic .NET
Using Visual Basic 6 [Mirror] Visual Basic 6 Database How-To [Mirror]
Hardcore Visual Basic