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Organic salts in plants in relation to nutrition and growth / H.D.W. van Tuil.
- Centre for agricultural publications and documentation,
- 1965.
- Wageningen :
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Amazon soils : a reconnaissance of the soils of the Brazilian Amazon region / W.G. Sombroek ; with a forew. by P. Lemos de Oliveira.
- 878.4
- Centre for agricultural publications and documentation,
- 1966.
- Wageningen :
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Horticultural research international : directory of horticultural research institutes and their activities in 23 countries / International society for horticultural science.
- Centre for agricultural publications and documentation,
- 1966.
- Wageningen :