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van Manen, Jan Dirk (author) report 1949
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van Manen, Jan Dirk (author) doctoral thesis 1951
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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) journal article 1952
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van Manen, Jan Dirk (author) journal article 1953
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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) 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) conference paper 1956
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van Manen, Jan Dirk (author) journal article 1956
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van Manen, Jan Dirk (author) journal article 1956
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van Manen, Jan Dirk (author) journal article 1957
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van Manen, Jan Dirk (author) journal article 1957
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van Manen, Jan Dirk (author) journal article 1958
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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