00793cam a22002531 4500 ca 30001473 DLC 20260227111124.0 751025s1930 xx 000 0 eng ca 30001473 (OCoLC)1733040 DLC TxDN TxDN DLC premarc QA533 .S5 514.5 Simpson, Thomas Marshall, 1881- Plane trigonometry and logarithms, by Thomas Marshall Simpson. Philadelphia, Winston [c1930] viii, 174 p. front., illus., diagrs. 19 cm. Contains answers. With this is bound the author's Logarithmic and trigonometric tables. Philadelphia, c1930. Plane trigonometry. Logarithms. 16736 16736