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2
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Summary of papers presented at the international seminar on agricultural research management, Beijing, China, 25-27 May 1992 / ed. by Rudolf B. Contant and A. Michelle Marks.
- International service for national agricultural research [etc.],
- 1992.
- The Hague [etc.] :
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Turning points in economic development / by Rudolf Bicanic.
- Mouton,
- 1972.
- The Hague [etc.] :