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Amazon.com: 3M 2176 Littmann Master Cardiology Smoke Chestpiece Stethoscope with 27" Black Tube : Industrial & Scientific
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3M™ Littmann® Stethoscope Binaurals for Master Cardiology™, Cardiology III™, Cardiology II S.E. and Cardiology S.T.C. Stethoscopes, Navy Blue Tube, Grey Eartips, 27 inch - SAVELIVES
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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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