UNE-EN ISO 1797:2017 Dentistry - Shanks for rotary and oscillating instruments (ISO 1797:2017) (Endorsed by Asociación Española de Normalización in July of 2017.)
2017UNE-EN ISO 1797:2017 Dentistry - Shanks for rotary and oscillating instruments (ISO 1797:2017) (Endorsed by Asociación Española de Normalización in July of 2017.)