Garzón López, Teresa (Date of defense: 2004-01-29)
El aluminio es el metal más abundante y tercer elemento en abundancia en la corteza terrestre. Es un importante factor que determina el crecimiento de los cultivos en suelos ácidos (pH<4.5, lo que ...
García Vargas, Diana (Date of defense: 2006-09-20)
Lead (Pb) is a highly toxic metal even at low concentrations and is present in a great variety of soils both naturally and as a result of industrial activity. For this reason, knowing the actuation and ...