共 5 条
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A slit samiler for collecting and counting air-borne bacteria
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JOURNAL OF HYGIENE,
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[3]
LITTLEFIELD JB, 1937, 3360 US BUR MIN INV
[4]
The estimation of the bactericidal power of the blood
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JOURNAL OF HYGIENE,
1938, 38 (06)
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[5]
[No title captured]