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Историческую версию Micro Dictionary - DDC можно получить на Android
Micro Словарь - классификация Дьюи (DDC)
The Dewey Decimal Classification (DDC) system, devised by library pioneer Melvil Dewey in the 1870s and owned by OCLC since 1988, provides a dynamic structure for the organization of library collections.
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Micro Dictionary - The Dewey Decimal Classification (DDC)