search query: @author Smid, P.P.M. / total: 2
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| title | year | author | ||
| 2. |
Economisch Statistische Berichte
1990 : NOV 21, VOL. 75:3784, p. 1084-1087 |
1990 | Couwenberg, O. Eije, J.H. von Smid, P.P.M. |
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