Production costs of cotton into the narrow system in Mato Grosso State/Brazil - Alves, Lucilio Rogerio Aparecido; Gottardo, Luiz Cesar Bonfim; Ferreira Filho, Joaquim Bento de Souza; Osaki, Mauro; Ribeiro, Renato Garcia; Ikeda, Victor Yoiti (Custos e Agronegócio Online, 2012)