Modern microscopy; a handbook for beginners and students (1912)
Cross, M. I, Cole, Martin J · Chicago, Chicago Medical Book Co. · leaf 59
ded for other thanvery elementary work. Only the centre of the field of such alens is ever useful, while with the aplanatic form the subject issharp and clear to the edge. The various magnifiers are alsosupplied in mounts for carrying in the pocket, and will be founduseful aids to the microscopist.… … THE MICROSCOPE-STAND 39
Microscopy
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