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2software, multimedia bibliotecaUNAM
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4Organic materials and soil productivity (Chinese ed.) Organic materials and soil productivity (Chinese ed.)by Flaig, W. 1423211760435, FAO, Rome (Italy). Land and Water Development Div. eng 183515, Nagar, B. 1423211766785, Sochtig, H. 1423211766786, Tietjen, C. 1423211766787
Published 1977Texto bibliotecaFAO IT -
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7Municipal sludge as organic fertilizer with special reference to the heavy metals constituents Municipal sludge as organic fertilizer with special reference to the heavy metals constituentsby El-Bassam, N., FAO, Vienna (Austria). Joint FAO/IAEA Div. of Atomic Energy in Food and Agriculture eng, Symposium on Soil Organic Matter Studies eng 6 Sep 1976 Braunschweig (Germany, F.R.), Tietjen, C.
Published AprTexto bibliotecaFAO IT