Meinten Sie:
classificationCode:(bk\:51.* OR bk\:58.41 OR ddc\:620.1* NOT ddc\:620.1) firstHoldingDate:[NOW/DAY-12month TO NOW/DAY] selectionKey:z*
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classificationCode:(bk\:51.* OR bk\:58.41 OR ddc\:620.1* NOT ddc\:620.1) firstHoldingDate:[NOW/DAY-18month TO NOW/DAY] selectionKey:z*
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classificationCode:(bk\:51.* OR bk\:58.41 OR ddc\:620.1* NOT ddc\:620.1) firstHoldingDate:[NOW/DAY-19month TO NOW/DAY] selectionKey:z*
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classificationCode:(bk\:51.* OR bk\:58.41 OR ddc\:620.1* NOT ddc\:620.1) firstHoldingDate:[NOW/DAY-1month TO NOW/DAY] selectionKey:z*