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Report on the XIXth International horticultural congress : Warsaw, Poland, 11-18 September 1974 / by F. Geurts and J.A. Ohler.
- Royal tropical institute. Department of agricultural research,
- 1974.
- Amsterdam :
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Tropical timber, a promising raw material for export diversification and establishment of processing industries : lecture on August 8, 1974, 12th International summer course on industrialization, The Hague / by J.T. Wassink.
- Royal tropical institute. Department of agricultural research,
- 1974.
- Amsterdam :
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Problems of commercial vegetable cultivation in South East Dahomey : paper presented at the 19th International horticultural congress, Warszawa, 11-18th September 1974 / by G.J.H. Grubben and F.M.A. Geurts.
- 862.28
- Royal tropical institute. Department of agricultural research,
- 1974.
- Amsterdam :