The last photo of Swift Japan 40 Ph. D.M. 0.65 160/0.17 RMS 40x (Ph DM) phase contrast microscope objective No. 58 - Mikroskopteil
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Swift Japan 40 Ph. D.M. 0.65 160/0.17 RMS 40x (Ph DM) phase contrast microscope objective No. 58
(Swift Japan 40x Ph DM microscope phase contrast objective, No. 58)