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Amazon.com: 3M 6163 Littmann Cardiology IV Black Chestpiece Stethoscope with 27" Black Tube : Industrial & Scientific
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3M Littmann Classic III Stethoscope, Rainbow-Finish Chestpiece, black stem and headset, Black Tube, 27 inch - Walmart.com
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Amazon.com: 3M 5803 Littmann Classic III Black Edition Chestpiece Monitoring Stethoscope, 27" Black Tube : Industrial & Scientific
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3M™ Littmann® Cardiology IV™ Diagnostic Stethoscope, #6186C Black Matte-finish Chestpiece, Black Headset, Alabaster Tube, 27 inch
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