1.
VĂ©lez-Ramos A, Standifer L. Effect of Organic Matter and Moisture Level on Extractable Soil Manganese. JAUPR [Internet]. 1977 Apr. 1 [cited 2024 Nov. 23];61(2):115-2. Available from: https://revistas.upr.edu/index.php/jaupr/article/view/10448