ObwegeserYKT-2038
Martin-Simplex YKT-2021
Oral InstrumentsYKT-2022
ObwegeserYKT-2037
SternbergYKT-2023
ObwegeserYKT-2024
Cawood-MinnesotaYKT-2025
Oral InstrumentsYKT-2026
Hartmann
ToboldYKT-2028
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Oral InstrumentsYKT-2030