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Offsite: Editeur's Thema page -- see Basic Instructions.PDF and full code list
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Thema Subject Categories
A book's subject is not considered to be hierarchical – every Thema code used describes the book' content and can be used as guide for someone seeking information on a subject. But Thema codes themselves are hierarchical and contain a reference to a higher level starting from their first letter representing one of (currently) 20 broad subject areas. As example, all Fiction subject codes start with F. Codes starting with FB are a subdivision of Fiction for " general & literary" while FD is "Speculative fiction." FBA, and FBC subdivides "general & literary" into "Modern & contemporary fiction" and "Classic fiction" while FD "Speculative fiction" is subdivided as FDB"Dystopian & utopian fiction" and FDK"Alternative history fiction" A retailer (or other metadata user) can enter at any of those levels and select a FBC as "Fiction" or "general & literary fiction" or "Modern & contemporary fiction".
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