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| publishing year | previous | first author | document title |
|---|---|---|---|
| 2011 | Acta Agronómica | Rueda Saa, Germán | Methods for establishing baseline values for heavy metals in agricultural soils:: Prospects for Colombia |
| 2009 | Bragantia | Valladares, Gustavo Souza | Total and available zinc in soil profiles from São Paulo state, Brazil |