Research in education
| 1. autor: | |
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| Format: | Książka |
| Wydane: |
Englewood, Cliffs
N.J. Prentice-Hall
[c1970].
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| Wydanie: | 2nd ed. |
| Seria: | Prentice-Hall series in educational measurement, research, and statistics
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| Hasła przedmiotowe: |