Physico-chemical characterization of humic-metal-phosphate complexes and their potential application to the manufacture of new types of phosphate-based fertilizers

1. Urrutia, O.
2. Erro, J.
3. Guardado, I.
4. San Francisco, S.
5. Mandado, M.
6. Baigorri, R.
7. Claude Yvin, J.
8. Ma Garcia-Mina, J.