[ 发表于: economia e sociologia rural ]
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Expert systems for agricultural economists: potential and relevance
1990
Silva, C.A.B. da
Biblioteca Nacional de Agricultura - Brazil
[Budget of beef-cattle production activities]
1988
Mattos, Z.P. de B. | Duarte, L.P. | Noronha, J.F. de | McGrann, J.
Biblioteca Nacional de Agricultura - Brazil
