NA 147
DIN Standards Committee Quality Management, Statistics and Certification
Technical rule
[CURRENT]
VDI/BTGA-MT 3922 Blatt 2
VDI/BTGA-MT 3922 Blatt 2
Energy consultancy - Competence assessment of energy consultants
Title (German)
Energieberatung - Feststellen der Kompetenz von Energieberatern