Trigonometry /
Smith, Rolland R. 1894-
Trigonometry / Rolland R. Smith and Paul P. Hanson. - Yonkers-on-Hudson, N.Y., World Book Co. [1957] - 470 p. illus. 24 cm.
57003500
Plane trigonometry.
QA533 / .S65
514.5
Trigonometry / Rolland R. Smith and Paul P. Hanson. - Yonkers-on-Hudson, N.Y., World Book Co. [1957] - 470 p. illus. 24 cm.
57003500
Plane trigonometry.
QA533 / .S65
514.5