Dentistry on stamps.
Loevy
H T
HT
Kowitz
A
A
D000349:Africa; D002244:Carbon; D003762:Dental Instruments / Q000266:history*; D018130:Diamond; D004867:Equipment Design; D005060:Europe; D049673:History, 20th Century; D010678:Philately
D002244:Carbon; D018130:Diamond