Thema Subject Categories 1.3

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Notation Category heading Add Mod ?
3 Time period qualifiers
DO NOT USE “3” on individual books, but select qualifiers from section 3* as appropriate
3B Prehistory
Use for: (3B* codes) may be used for different time periods depending on the geographical area
3BD Stone Age 1.1
3BDF Stone Age: Palaeolithic period 1.1 1.2
3BDK Stone Age: Mesolithic period 1.1 1.2
3BDQ Stone Age: Neolithic period 1.1
3BD-JP-J c 16500 to c 1000 BCE (Japanese Jomon period) 201910

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