Essentials of plane and spherical trigonometry
By: [by] Clifford Bell [and] Tracy Y. Thomas ...
Contributors: Thomas, Tracy Y. 1899-
Publisher: H. Holt and Company
Published: 1943
Place of publication: New York
Language: eng
Number of pages: 166
Subjects: Trigonometry.
Notes: Plates accompanied by two pages of instructions not included in paging.

Protractor in pocket.

"Answers to odd-numbered problems": p. 129-138 (2d group)