JUS H B8 709-1980 Anafysis oftechnical l l l-trichloro-22-di-(p-chlorophenyl)ethane Determination ofsolid material msohible in acetone《工业用l，l，l-三氯-2，2-二-（对-氯苯基）乙烷 可溶于丙酮的固体无物质的含量测定》.pdf

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