ESTEVA JR., Carlos. A COMPARISON OF METHODS OF DETERMINING CARBON IN SOILS. The Journal of Agriculture of the University of Puerto Rico, [S. l.], v. 22, n. 2, p. 123–136, 1938. DOI: 10.46429/jaupr.v22i2.12906. Disponível em: https://revistas.upr.edu/index.php/jaupr/article/view/12906. Acesso em: 17 jul. 2024.