The relative merits of three methods of subtraction
Subtitle: an experimental comparison of the decomposition method of subtraction with the equal additions method and the Austrian method
By: by John Theodore Johnson.
Series: Columbia University. Teachers College. Contributions to education ;; no. 738; Contributions to education ;; no. 738.
Publisher: Teachers College, Columbia University
Published: 1938
Place of publication: New York
Language: eng
Number of pages: 76
Subjects: Subtraction
Notes: Bibliography: p. 72-76.
Originally presented as the author's thesis, Columbia.