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1by 63766 Durst, R.L., 122302 Sullivan, P.J., 6885 Department of Agriculture, Washington, D.C. (EUA)
Published 1989Texto bibliotecaIICA -
2by 122302 Sullivan, P.J., 130297 Wainio, J., 113200 Roningen, V.O., 6896 Department of Agriculture, Washington, D.C. (EUA). Economic Research Service
Published 1989Texto bibliotecaIICA -
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