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MARINE BIOLOGICAL LABORATORY 



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QEORQE M. GRAY, Curator, Woods Hole, Mass. 



ELEVENTH EDITION 



THB MICROSCORE, 



Bn introduction to Microscopic Methods and to Histology, by 

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WIECHMANN — Sugar Analysis. For 



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CLEWELL—I^aboratory Manual, Direct 

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MACINTIRE — Mechanical Refrigera- 

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