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Ancient dune fields and fluviatile deposits in the Rima-Sokoto river basin (N.W. Nigeria) : geomorphic phenomena in relation to quaternary changes in climate at the southern edge of the Sahara / W.G. Sombroek and I.S. Zonneveld.
- 862.9
- Soil survey institute,
- 1971.
- Wageningen :
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A pedo-geomorphological classification and map of the holocene sediments in the coastal plain of the three Guianas / R. Brinkman and L.J. Pons.
- Soil survey institute,
- 1968.
- Wageningen :
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Micromorphometric soil-porosity characterization by means of electro-optical image analysis (quantimet 720) / S.N.A. Ismail.
- Soil survey institute,
- 1975.
- Wageningen :