Leader/11 Subfield code count (Leader)
The Subfield code count character position contains a one-character number equal to the number of character positions used for a subfield code in variable data fields. (Each data element is a variable data field is identified by a subfield code.) In USMARC, a subfield code consists of a delimiter ($) and a lowercase alphabetic or numeric data element identifier; therefore, the Subfield code count is always 2.
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