KELLS, LYMAN M.
Plane trigonometry, by Lyman M. Kells, Willis F. Kern & James R. Bland. 2d ed.
KELLS, LYMAN M. Plane trigonometry, by Lyman M. Kells, Willis F. Kern & James R. Bland. 2d ed. © 2Jan42; A160412. Lyman M. Kells (A), Anna Lee Kern (W) & James R. Bland (A); 2Sep69; R467810.
Lyman M. Kells|A||Anna Lee Kern|W||James R. Bland|A