search query: @author Zwan, J.P. van der / total: 1
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title | year | author | ||
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Economisch Statistische Berichte
1990 : MAR 7, VOL. 75:3748, p. 220-223,228 |
1990 | Jonkhart, M.J.L. Jaspers, P.F.M. Zwan, J.P. van der |
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