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14299 documents found.
Published:
| Verstegen, R.
Published:
| Carion, G. Delbar, J. Jolly, J.M. & Neuville, C.
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| Haan, N. de & Breuker, J.
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| Centraal Bureau voor de Statistiek CBS
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| Przyborowski, J. & Wilenski, H.
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| -
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| Schumacher, R.O.
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| Festinger, L.