. Public health laboratory work, including methods employed in bacteriological research, with special reference to the examination of air, water and food contributed . Fig. 16.—Crucible tongs. comes in equally serviceable for other analyses—apartfrom that of water. This consists, as in figure 18, of a.

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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherphiladelphiablakis