Trigonometry; a programmed text
By: [by] Mervin L. Keedy [and] Marvin L. Bittinger.
Contributors: Bittinger, Marvin L., joint author.
Publisher: Holt, Rinehart, and Winston
Published: 1969
Place of publication: [New York
Language: eng
Number of pages: 262
Subjects: Trigonometry -- Programmed instruction.