Alencar, Thiago Leite, Instituto Federal de Educação, Ciência e Tecnologia do Piauí, Brazil
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Revista de Ciencias Agrícolas Vol. 38 No. 1 (2021): Revista de Ciencias Agrícolas - First semester, January - June 2021 - Research Article
Assessing the soil color by traditional method and a smartphone: a comparison
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