# Inch CI

Identifier::Global::Lccn

Parsed documentation:

@todo This validation will be needing a lot of additional work, if we start relying on it. See http://www.loc.gov/marc/bibliographic/bd010.html

  LCCN Structure A (1898-2000)
    Name of Element 	Number of characters 	Character position in field
    Alphabetic prefix 	        3 	          00-02
    Year 	                      2 	          03-04
    Serial number 	            6 	          05-10
    Supplement number 	        1 	          11
    Suffix and/or Revision Date variable 	    12-n

  LCCN Structure B (2001- )
    Name of Element 	Number of characters 	Character position in field
    Alphabetic prefix   2 	                    00-01
    Year                4 	                    02-05
    Serial number 	    6 	                    06-11

  Alphabetic prefix
    Prefixes are carried in a MARC record as lowercase alphabetic characters and serve to differentiate
      between different series of LC control numbers. Prefixes are left justified and unused positions
      contain blanks. If no prefix is present, the prefix portion contains blanks.

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