Though a negative trend in the number of licensed products occurred, HCH was produced and used intensively in many fields of the GDR (e.g., agriculture, forest, hygiene, material protection, private), which led to highly contaminated agricultural soils (Heinisch and Klein 1992 ).
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Dissent in the sediment? Lake sediments as archives of short- and long-range impact of anthropogenic activities in northeastern Germany.
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