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20
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Kola : its botany and cultivation / by C.L.M. van Eijnatten.
- 862
- Royal tropical institute. Department of agricultural research,
- 1969.
- Amsterdam :
-
Report of fact finding mission on joint research project between El-Minia university, Egypt and Royal tropical institute, the Netherlands / by T.A. El Baradi, R.M. Schelhaas, F. van der Pol.
- 861.6
- Royal tropical institute. Department of agricultural research,
- [ca. 1980].
- Amsterdam :
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Procedures for the determination of exchangeable cations and C.E.C. of calcareous and gypsiferous soils / by H.A. van Rosmalen.
- Royal tropical institute. Department of agricultural research,
- 1980.
- Amsterdam :
-
Evaluation and modification of the determination of exchangeable bases and cationexchange capacity of calcareous and gypsiferous soils by using silver thiourea / by H.A. van Rosmalen.
- Royal tropical institute. Department of agricultural research,
- [ca. 1980].
- Amsterdam :
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Weed control practices in citrus, cotton and rice / P.J. van Rijn.
- Royal tropical institute. Department of agricultural research,
- 1972.
- Amsterdam :
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Characteristics of weeds / by P.J. van Rijn.
- Royal tropical institute. Department of agricultural research,
- 1972.
- Amsterdam :
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Recent developments in weed control in the tropics / bu P.J. van Rijn.
- Royal tropical institute. Department of agricultural research,
- 1973.
- Amsterdam :
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Weed control practices in rice, cotton, soya beans, and the tree crops tea and coffee : lecture on 11th October 1973 : 2nd International course on plant protection, Wageningen / by P.J. van Rijn.
- Royal tropical institute. Department of agricultural research,
- [ca. 1973].
- Amsterdam :
-
Noxious weeds : lecture on October 16th 1972, International course on plant protection, Wageningen / P.J. van Rijn.
- Royal tropical institute. Department of agricultural research,
- 1972.
- Amsterdam :
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Protection of stored products against biological deterioration / by G.G.M. Schulten, F.A. Roorda and V.M. Russell.
- Royal tropical institute. Department of agricultural research,
- 1979.
- Amsterdam :