JUS H B8 702-1980 Analysis oftechnical l l l-trichbro-2 2-di- (p-chlorophenyl)ethane Determination of pjp--DDT content《工业用l，l，l 三氯 2，2 二 （p 氯苯基）乙烷 pjp - DDT含量的测定》.pdf

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