Interpretative study of research and development in elementary school mathematics, phase 2
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Author
Contributions
- United States. Department of Health, Education, and Welfare. - Contributor
- Pennsylvania State University. - Contributor
Publication
1970 - U.S. Department of Health, Education, and Welfare, Washington, United States
Language
English
Word Count
30,000 words, Guess
Page Count
120 pages
Physical Format
Microform
Identifiers
- Open LibraryOL13790835M
Subjects
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