Characterization and Greenhouse Trial of Zn Bio-Chelates Derived from Spent Coffee Grounds. - Cervera-Mata, Ana; Lara-Ramos, Leslie; Rufián-Henares, José Ángel; Fernández-Arteaga, Alejandro; Fernández-Bayo, Jesús; Delgado, Gabriel (Agronomy, 2024)