Analytic trigonometry
Helton, Floyd Franklin
Analytic trigonometry [by] Floyd F. Helton. - Philadelphia Saunders 1972. - vii, 297 p. illus. 26 cm.
0721646328
78180181
Trigonometry, Plane.
QA533 / .H475
516/.34
Analytic trigonometry [by] Floyd F. Helton. - Philadelphia Saunders 1972. - vii, 297 p. illus. 26 cm.
0721646328
78180181
Trigonometry, Plane.
QA533 / .H475
516/.34