Sanford, Vera, 1891- A short history of mathematics, [electronic resource] / by Vera Sanford ... under the editorship of John Wesley Young, with an introduction by David Eugene Smith.. — Boston, New York [etc.] : Houghton Mifflin Company, [c1930]. — xii, 402 p. : illus. (incl. ports.) pl., maps, facsims., diagrs. 21 cm.