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1Texto bibliotecaFAO IT
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2Elements of the structure of agricultural education in the United States of America Elements of the structure of agricultural education in the United States of Americaby Howell, D.L., UNESCO, Paris (France) eng, Lindley, W.I., Morton, R.H., Stevens, G.Z., Yoder, E.P.
Published 1983Texto bibliotecaFAO IT