A Test of understandings of selected propertiers of a number system
Subtitle: primary form
By: by Robert B. Ashlock and Ronald C. Welch.
Publisher: sn.
Published: 1966
Place of publication: sl
Language: eng
Subjects: Arithmetic -- Examinations, questions, etc; Arithmetic -- Study and teaching (Elementary)
Notes: RECON:1984-06-20  Main entry: Ashlock.