Snover, Stephen L. Programming the T1-55 slide rule calculator / Stephen L. Snover, Mark A. Spikell - Englewood Cliffs, N.J. : Prentice-Hall, 1982 - 117 p. : 24 cm. A Spectrum Book ISBN: 0137299133 Subjects--Topical Terms: T1 Programmable 55 (Calculating--machine)