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Stolker, C (author), Verheij, H.J. (author) report 2001
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Verheij, H.J. (author) report 2000
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Verheij, H.J. (author) report 1995
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Douma, F.A. (author), Verheij, H.J. (author), Witteveen, M. (author) report 1995
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Douma, F.A. (author), Witteveen, M. (author), Verheij, H.J. (author) report 1994
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Verheij, H.J. (author), Huyskens, R.B.H. (author) report 1993
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Verheij, H.J. (author), Groot, F. de (author), Coops, H. (author), Geilen, N. (author) report 1992
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Laboyrie, J.H. (author), Verheij, H.J. (author) report 1988
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Verheij, H.J. (author), Laboyrie, J.H. (author) report 1988
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Verheij, H.J. (author) report 1982