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Report on the international conference on managing saline water for irrigation : planning for the future : 16-20 August 1976, Texas tech. university, Lubbock, Texas / T.A. El Baradi.
- Royal tropical institute. Department of agricultural research,
- 1976.
- Amsterdam :
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Final report of mission to Venezuela in May 1976 on aquatic weed problems / by A.H. Pieterse, G.G.M. Schulten.
- 878.2
- Royal tropical institute. Department of agricultural research,
- 1976.
- Amsterdam :