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| 037 | _cTheses | ||
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| 041 |
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| 100 | _aGupta Nirmal | ||
| 110 | _aUniversity of Delhi. Faculty of Education. Department of Education | ||
| 245 | 0 | _aStudy of some variables related to students, teachers and instructional material having their bearing on learing outcomes in biology | |
| 260 | _c1975 | ||
| 300 |
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| 650 | _aEDUCATION | ||
| 700 | _aUniversity of Delhi. Faculty of Education. Department of Education | ||
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