RODRÍGUEZ, JULIO. «Preliminary Report on Estimating Potassium Content of Soils and Minerals». Ars Pharmaceutica (Internet) 1, no. 3-4 (abril 20, 1960): 234–239. Accedido julio 22, 2024. https://revistaseug.ugr.es/index.php/ars/article/view/5815.