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The soils of the wind erosion control camp area Karapinar Turkey / A.F. Groneman.
- 859.1
- Agricultural university. Department of tropical soil science,
- 1968.
- Wageningen :
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Computation of the absolute maximum food production of the world : a contribution to the research project on "Problems of population doubling and food supply" / by P. Buringh, H.D.J. van Heemst and G.J. Staring.
- Agricultural university. Department of tropical soil science,
- 1975.
- Wageningen :