兑水 发表于 2009-10-16 09:41:33

ASTM D 5392-1993 用两步膜滤法分离和计数水中大肠杆菌的标...

D5392-93(2000) Standard Test Method for Isolation and Enumeration of Escherichia Coli in Water by the Two-Step Membrane Filter Procedure
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