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Wave Phenomena

By Dudley H. Towne

34 more tested, ready-to-run game programs in BASIC

By Horn, Delton, T.

55 advanced computer programs in BASIC

By William Scott Watson

Invitation to FORTRAN for the TRS-80

By Lawrence L. McNitt

Fundamentals of Computer Programming with CSharp Free Book (by Nakov & Co.)

By Svetlin Nakov