Data type

External identifier

Statements

https://id.loc.gov/authorities/classification/$1
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[A-Z]{1,3}(\d+(\.\d+)?( *\.[A-Z]{0,3}\d+([ -]\.?[A-Z]{0,3}\d+)?)?( *\d+[a-z]*)?)?-?([A-Z]{1,3}(\d+(\.\d+)?( *\.[A-Z]{0,3}\d+([ -]\.?[A-Z]{0,3}\d+)?)?( *\d+[a-z]*)?)?)?
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