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van Manen, Jan Dirk (author) report
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van Manen, Jan Dirk (author) report
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van Manen, Jan Dirk (author) report
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van Manen, Jan Dirk (author), Oosterveld, M.W.C. (author) report 1969
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van Manen, Jan Dirk (author), Wereldsma, R. (author) report 1960
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van Manen, Jan Dirk (author) report 1960
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van Manen, Jan Dirk (author) report 1958
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van Manen, Jan Dirk (author), Lap, A.J.W. (author) report 1958
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van Manen, Jan Dirk (author) report 1955
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van Manen, Jan Dirk (author), van Lammeren, W.P.A. (author) report 1955
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van Manen, Jan Dirk (author) report 1954
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van Manen, Jan Dirk (author) report 1954
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van Manen, Jan Dirk (author) report 1954
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Lammeren, W.P.A (author), van Manen, J.D. (author) report 1954
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van Manen, Jan Dirk (author), Troost, L. (author) report 1952
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van Manen, Jan Dirk (author) report 1952
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van Manen, Jan Dirk (author) report 1949