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3M Littmann Classic III Monitoring Stethoscope, Black Tube, 27 inch, 5620: Amazon.com: Industrial & Scientific
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3M 5811 Littmann Classic III Smoke-Finish Monitoring Stethoscope with Black Identification Tag, 27" Black Tube: Amazon.com: Industrial & Scientific
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3M 5811 Littmann Classic III Smoke-Finish Monitoring Stethoscope with Black Identification Tag, 27" Black Tube: Amazon.com: Industrial & Scientific
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