Roger E. Clark

4 books

Apr 1986
Cover of The Compleat I. B. M. Spreadsheeter

The Compleat I. B. M. Spreadsheeter

Jan 1, 1986
Cover of The Compleat Apple Spreadsheeter

The Compleat Apple Spreadsheeter

Jan 1, 1984
Cover of Executive SuperCalc

Executive SuperCalc

Dec 1983
Cover of Executive VisiCalc for the I.B.M.Personal Computer

Executive VisiCalc for the I.B.M.Personal Computer