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AR-BaBNM |
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20251009104811.0 |
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000000s1954 xx |||||||||||||||||eng|d |
| 035 |
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|a 000167768
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| 040 |
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|a AR-BaBNM
|b spa
|e aacr
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| 100 |
1 |
|
|a Otto, Henry J.
|
| 245 |
1 |
0 |
|a Class size factors in elementary schools
|
| 260 |
|
|
|a [S.l.] :
|b [s.n.],
|c 1954.
|
| 300 |
|
|
|a 1 v.
|
| 490 |
0 |
|
|a Bureau of laboratory schools ;
|v 4
|
| 650 |
|
4 |
|a Educación inicial
|9 7607
|
| 650 |
|
4 |
|a Actividades escolares
|9 6434
|
| 650 |
|
4 |
|a Relación alumno-docente
|9 9837
|
| 650 |
|
4 |
|a Educación
|9 7568
|
| 651 |
|
4 |
|a Estados Unidos
|9 5788
|
| 710 |
1 |
|
|a University of Texas
|
| 942 |
|
|
|2 udc
|c LIBRO
|
| 999 |
|
|
|c 158858
|d 158858
|
| 080 |
|
|
|a 371.621
|