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| LEADER |
00684cas#a2200241#a#4500 |
| 001 |
015334 |
| 005 |
20160923115050.0 |
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| 110 |
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|a University of Pittsburgh. School of education
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| 245 |
0 |
0 |
|a Science education
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| 260 |
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|a Pittsburgh :
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| 300 |
|
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|a v.
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| 310 |
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|a semestral
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| 650 |
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7 |
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