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Title: [Go to resource]
Description: Optometer, objective or subjective, metal, European, 1831-1920 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: objective optometers Temporal: 1831-1920 Source: Science Museum Identifier: A625214 Go to resource More Like this...-
Portable monaural stethoscope, English(?), 1831-1920Portable monaural stethoscope, English(?), 1831-1920
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