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4559 documents found.
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| Mace, D.J. Perchonok, K. & Pollack, L.
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| Conley, C.G. Abbott, F.P. Brinkman, C.P. & Tom, J.
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| Centraal Bureau voor de Statistiek CBS.
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| Traynor, B.G. Searcy, W.G. & Tarrants, W.E.