Catalog Record: An experimental study to determine the relative difficulty of the elementary number combinations in addition and multiplication | HathiTrust Digital Library

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An experimental study to determine the relative difficulty of the elementary number combinations in addition and multiplication ...
By Harry Vance Holloway ...

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Main Author: Holloway, Harry Vance, 1875-
Language(s): English
Published: Trenton, N. J., State gazette publishing co., printers, 1915.
Subjects: Educational psychology.
Arithmetic > Arithmetic / Study and teaching.
Physical Description: 102 p. X diagr. (part fold.) 23 cm.
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