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1by Guenzi, W.D., Ahlrichs, J.L., Chesters, Gordon, Bloodworth, M.E., Nash, R.G. (eds.)
Published 1974Texto bibliotecaCIAT -
2by Barnett, J.P., Department of Agriculture, Washington, DC (USA) eng, Bergman, P.W., Ferguson, L.W., Nash, R.G., Ochs, P.M., Environmental Protection Agency, Washington, DC (USA) eng
Published 1980Texto bibliotecaFAO IT