Citric Acide
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Citric Acide, Polarizing light, 25x, Leitz Orthoplan, taken by Dr. Michael Olsen, Dep. of Cariology and Endodontics, University of Copenhagen, DK
Citric Acide, Polarizing light, 25x, Leitz Orthoplan, taken by Dr. Michael Olsen, Dep. of Cariology and Endodontics, University of Copenhagen, DK
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