2008 | “Cathodic Protection Level 1”. Certification number: 19177. National Association of Corrosion Engineer (NACE International). 19-24 de mayo de 2008. |
2008 | “Cathodic Protection Level 1”. Certification number: 19177. National Association of Corrosion Engineer (NACE International). 19-24 de mayo de 2008. |