1.
DemattĂȘ J, Holowaychuck N. Use of X-ray fluorescence in calcium and potassium determination in soils . An. Esc. Super. Agr. Luiz de Queiroz [Internet]. 1977 Jan. 1 [cited 2024 May 27];34:07-13. Available from: https://www.revistas.usp.br/aesalq/article/view/39201