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2
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3
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4
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6by Dieleman, P.J., FAO, Rome (Italy). Land and Water Development Div. eng, Trafford, B.D.
Published 1976Texto bibliotecaFAO IT -
7by Thomasson, A.J. (ed.), Rothamsted Experimental Station, Harpenden (United Kingdom) eng, Mackney, D., Trafford, B.D., Walpole, R.A.
Published 1975Texto bibliotecaFAO IT -
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