21. [Tooth extraction] Author(s): Elkan, O., artist Publication: [194-?] Subject(s): Tooth ExtractionDental EquipmentDentistry
22. [Dog with a toothache] Author(s): Elkan, O., artist Publication: [194-?] Subject(s): Tooth ExtractionDental EquipmentDentistry
23. [Dog with a toothache] Author(s): Elkan, O., artist Publication: [194-?] Subject(s): Dental EquipmentDentistry