Buck, Robert J. Introduction to microcomputers : using PC-Type, PC-Calc, and PC-File / by J. Robert Buck. - Englewood Cliffs, N.J. : Prentice Hall, 1991. - xii, 207 p. ISBN: 0134847598 Subjects--Topical Terms: Computer science.Microcomputers.PC-Type (Computer program).PC-Calc (Computer program).PC-File (Computer program).