Morgan, Frank M.
Plane and spherical trigonometry - 1st ed. - New York American Book 1951 - v, 243p. illus 21 cm.
Spherical trigonometry
514 / MOR/1951
Plane and spherical trigonometry - 1st ed. - New York American Book 1951 - v, 243p. illus 21 cm.
Spherical trigonometry
514 / MOR/1951