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4
-
The struggle of the green against the yellow dragon : (the Chinese approach to desertification control and its usefulness for the Sahel) / H. Breman.
- Centre for agrobiological research (CABO),
- 1987.
- Wageningen :
-
Comparative classification of some deep, well-drained red clay soils of Mozambique / J.H. Kauffman.
- ISRIC,
- 1987.
- Wageningen :
-
The economics of oil palm / H.A.J. Moll.
- Pudoc,
- 1987.
- Wageningen :
-
Soils of the Kilifi area, Kenya / ed. H.W. Boxem, T. de Meester and E.M.A. Smaling.
- Pudoc,
- 1987.
- Wageningen :