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- Corporate/Agency Authors:
- National Institute of Education and Health, Education and Welfare Dept.
- Publisher:
- National Institute of Education
- Date:
- Dec. 1972
- SuDoc number:
- HE 18.11/2:(nos.)
- Corporate/Agency Authors:
- National Institute of Education and Health, Education and Welfare Dept.
- Publisher:
- National Institute of Education
- Date:
- Dec. 1972
- SuDoc number:
- HE 18.11:81
- Corporate/Agency Authors:
- National Institute of Education and Health, Education and Welfare Dept.
- Publisher:
- National Institute of Education
- Date:
- [June 1969, revised Aug. 1972.]
- SuDoc number:
- HE 18.2:Er 4
- Corporate/Agency Authors:
- National Institute of Education and Health, Education and Welfare Dept.
- Publisher:
- National Institute of Education
- Date:
- [1972; published 1973.]
- SuDoc number:
- HE 18.11/2:(nos.)
- Corporate/Agency Authors:
- National Institute of Education and Health, Education and Welfare Dept.
- Publisher:
- National Institute of Education
- Date:
- 1972
- SuDoc number:
- HE 18.13:8
- Corporate/Agency Authors:
- National Institute of Education and Health, Education and Welfare Dept.
- Publisher:
- National Institute of Education
- Date:
- [1972.]
- SuDoc number:
- HE 18.9:36
- Corporate/Agency Authors:
- National Institute of Education and Health, Education and Welfare Dept.
- Publisher:
- National Institute of Education
- Date:
- [1972.]
- SuDoc number:
- HE 18.9:39
- Corporate/Agency Authors:
- National Institute of Education and Health, Education and Welfare Dept.
- Publisher:
- National Institute of Education
- Date:
- [1972.]
- SuDoc number:
- HE 18.9:(nos.)
- Corporate/Agency Authors:
- National Institute of Education and Health, Education and Welfare Dept.
- Publisher:
- National Institute of Education
- Date:
- [1972.]
- SuDoc number:
- HE 18.9:(nos.)
- Corporate/Agency Authors:
- National Institute of Education and Health, Education and Welfare Dept.
- Publisher:
- National Institute of Education
- Date:
- [1972.]
- SuDoc number:
- HE 18.10:972-2/ind.