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3748 documents found.
Published:
| Flury, F.C.
Published:
| Asmussen, E.
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| Asmussen, E.
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| Asmussen, E.
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| Aarts, J.H. & Hamel, A.
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| Aarts, J.H. & Hamel, A.
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| Bouchard, A.J.J.
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| Centraal Bureau voor de Statistiek CBS
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| -
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| Duncan, D.B. & Horn, S.D.