search query: @author Boonstra, W. W. / total: 2
references: 1-2 / 2
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title | year | author | ||
1. |
Economisch Statistische Berichte
1988 : JAN 1, VOL. 73:3637, p. 14-18 |
1988 | Boonstra, W. W. |
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2. |
Economisch Statistische Berichte
1987 : JAN 28, VOL. 72:3591, p. 96-101 |
1987 | Boonstra, W. W. |
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