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Amazon.com: 3M Littmann Stethoscope, Cardiology IV, Black Tube, Stainless Steel Chestpiece, 27 Inch, 6152 : Industrial & Scientific
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Amazon.com: 3M Littmann Stethoscope, Cardiology IV, Black Tube, Stainless Steel Chestpiece, 22 inch, 6151 : Industrial & Scientific
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3M™ Littmann® Cardiology IV™ Diagnostic Stethoscope, High Polish Rainbow-Finish Chestpiece, Black Tube, Smoke Stem and Smoke Headset, 27 inch, #6240 (Misengraved Chestpiece)
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