Revista de ciências agrárias - Universidade Federal Rural da Amazônia (Universidade Federal Rural da Amazônia, 1999)
Keywords: Agriculture : Brazil : Pará (State) : Periodicals; Agriculture : Amazon River Region : Periodicals; Agriculture : Periodicals; Agriculture : Research : Brazil : Pará (State) : Periodicals; Environmental sciences : Brazil : Pará (State) : Periodicals; Environmental sciences : Periodicals; Agriculture; Agriculture : Research; Environmental sciences; Amazon River Region; Brazil : Pará (State)