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Amazon.com: 3M 6163 Littmann Cardiology IV Black Chestpiece Stethoscope with 27" Black Tube : Industrial & Scientific
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Amazon.com: Compatible Replacement Tube by CardioTubes fits Littmann(r) MasterCardiologyI(r) and Littmann(r) Cardiology III(r) Stethoscopes - 7mm Binaurals BLACK TUBING : Industrial & Scientific
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Amazon.com: 3M 6163 Littmann Cardiology IV Black Chestpiece Stethoscope with 27" Black Tube : Industrial & Scientific
3M™ Littmann® Cardiology IV Stethoscope, 3M Littmann Cardiology IV • 22" Black Tube | Hopkins Medical Products
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3M™ Littmann® Cardiology IV™ Stethoscope, 6177, Mirror-Finish Chestpiece and Stem, Black Tube, 27 inch, 3 Each/Case | 3M Singapore
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