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Author
Contributions
- Forsyth, V. J., joint author. - Contributor
- Resnikoff, H. L., joint author. - Contributor
- R & D Consultants Company. - Contributor
Publication
1969 - U.S. Office of Education, Bureau of Research, Washington, District of Columbia
Language
English
Word Count
21,250 words, Guess
Page Count
85 pages
Identifiers
- Library of Congress Control Number70606387
- Open LibraryOL5738569M
Classifications
- DDC025.3
- LCCZ695 .D64
Subjects
Topics
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