Periodontal curettes, dental scalers and excavators - Part 2: Periodontal curettes - Gr-type (ISO 13397-2:1996); German version EN ISO 13397-2:1996— 6 стр.
Periodontal curettes, dental scalers and excavators - Part 4: Dental excavators, discoid-type (ISO 13397-4:1997); German version EN ISO 13397-4:1997— 6 стр.