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3by Barwell, I., Intermediate Technology Development Group, London (United Kingdom) eng, Ayre, M.
Published 1982Texto bibliotecaFAO IT -
4by Barwell, I.J., ILO, Geneva (Switzerland). World Employment Programme eng, Edmonds, G.A., Howe, J.D.G.F., De Veen, J.J.
Published 1985Texto bibliotecaFAO IT