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The microscope and its revelations (1891)
Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 94
Fig. 60. Fig. 61. On inserting the diaphragm, fig. 60, and replacing the eye-piece,we find, in the place of the old network, the one shown in fig. 61,Microscopy
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
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