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- van der Wagt, J. (author), Hengst, S. (author) other 2000
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- Hengst, S. (author), van der Hout, I. (author), Hoffer, B. (author) other 2000
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- Boonstra, H. (author), Hengst, S. (author), Ferrao, P. (author) other 2000
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- Hengst, S. (author) book 1999
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- Hengst, S. (author), Smit, K. (author), Stoop, J.A. (author) book 1999
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- Hengst, S. (author) other 1999
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- Hengst, S. (author) other 1999
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- Hengst, S. (author) other 1999
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- Stavenuiter, J. (author), Hengst, S. (author) report 1999
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- Hengst, S. (author), Schmal, D. (author), Mallant, R.K.A.M. (author) other 1999
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- Hengst, S. (author) other 1999
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- Stoop, J.A. (author), Hengst, S. (author) other 1999
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- Hengst, S. (author) other 1999
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- Hengst, S. (author) book 1999
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- Hengst, S. (author) lecture notes 1999
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- Hengst, S. (author) other 1999