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PROJECTION MICR OSCOPES. EL ECTRIC LANTERNS. 



Microscopes for all purposes, Microtomes and Knives, Aplanatic Pocket 

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%^ E. Leitz, ^ 



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18 BLOOMSBURY SQUARE, LONDON, W.G, 



{A few doors from the British Museum.) 



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Botanisches Centralblatt 



Vols. 69 to 115, first 20 vols, bound in buckram, and rest in 

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