• publisher: New York, The Macmillan company
  • creator: Jessup, Walter Albert, 1877-1944 Coffman, Lotus Delta, 1875-1938, joint author
  • contributor: Coffman, Lotus Delta, 1875-1938, joint author.
  • Keyword: Arithmetic Study and teaching.
  • years: 1916.
  • pages: vii, 225 p.
  • class: QA135
  • download: pdf file