Unit mastery mathematics
By: by John C. Stone, Clifford N. Mills, Virgil S. Mallory.
Contributors: Mills, Clifford Newton, b. 1886, joint author.; Mallory, Virgil Sampson, 1888-1959, joint author.
Publisher: B. H. Sanborn & co.
Published: 1934
Place of publication: Chicago; New York [etc.]
Language: eng
Subjects: Mathematics.
Notes: "Ruler square protractor" in pocket on lining-paper of books 1-2.