Historical topics in algebra. From Historical topics for the mathematics classroom (thirty-first yearbook of the NCTM) Historical topics for the mathematics classroom. Algebra History. QA21 .H56 510.9 NAH "A separate presentation of the 'capsules' dealing with algebra in the Thirty-first Yearbook [1969] of the National Council of Teachers of Mathematics, Historical topics for the mathematics classroom." Bibliography: p. [vi] Washington, National Council of Teachers of Mathematics 1969. 1969. 1971 Text xiv, 525 p. : eng