Customer-Centred Classification
The Markham Village branch was to first to develop its own library classification system called the Customer Centred Classification (C3). Compared to the Dewey Decimal Classification (DDC) or Library of Congress Classification (LCC), C3 is more modern and is supposed to be easier for library patrons to find books at the book stacks. The Thornhill Village branch started the migration to C3 in 2009, and C3 is used by the Thornhill Community Centre branch when it re-opened in 2011.
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