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| LEADER |
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| 020 |
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|a 81-207-1145-9
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| 082 |
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|a 372.35 M9
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| 100 |
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|a Layton, David; Ed
|
| 245 |
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|a Innovations in science and technology education
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| 260 |
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|a New Delhi, Sterling
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| 260 |
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|c 1989
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| 465 |
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|a R 150
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| 650 |
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|a Educational innovations
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| 650 |
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|a Elementary education
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| 650 |
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|a Science
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| 650 |
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|a Study
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| 650 |
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|a Teaching
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| 942 |
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|c BK
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|w 2013-07-16
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