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- Veldkamp Marktonderzek B.V. (author) report 1999
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- Dings, J.M.W. (author) report 1999
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- NIPO (author) report 1999
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- Hage, S.A. (author), Hoppenbrouwers, J.J. (author), Tusveld, F.H. (author) report 1999
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- Hengst, S. (author) lecture notes 1999
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- Hengst, S. (author) lecture notes 1999
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- Veldkamp Marktonderzek B.V. (author) report 1999
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- Brolsma, J.U. (author) report 1998
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- NEA (author) report 1998
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- Rotterdams Interne Logistiek (author) report 1998
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- NIM (author) report 1998
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- Ministerie van Verkeer & Waterstaat (author) report 1998
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- Dings, J.M.W. (author), Klimbie, P.B. (author) report 1998
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- GEMAKO (author) report 1998
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- Hengst, S. (author), Dirkse, C. (author), van der Cammen, J.J. (author) other 1998
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- Boonstra, H. (author), Dirkse, C. (author), Roeleveld, R. (author), de Jong, G. (author) other 1998