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3126 documents found.
Published:
| Bierman, G.R. & Hain, J.L.
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| Balen, A.Th.M. van
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| Asmussen, E.
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| Griep, D.J.
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| Seraggs, D.A.
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| Hartmann, E. & Moses, E.A.
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| Centraal Bureau voor de Statistiek CBS
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| Sabey, B.E.
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| Wagenaar, W.A.
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| Sandres, A.F.