LEADER
The leader has no indicators or subfield codes; the data elements are positionally defined.
00-04 Record length 05 Record status c Corrected record d Deleted record n New record o Previously issued higher level record p Previously issued as an incomplete, pre-publication record 06 Type of record a Language materials, printed b Language materials, manuscript c Music scores, printed d Music scores, manuscript e Cartographic materials, printed f Cartographic materials, manuscript g Projected and video material (motion pictures, filmstrips, slides, transparencies, video recordings) i Sound recordings, nonmusical performance j Sound recordings, musical performance k Twodimensional graphics (pictures, designs etc.) l Computer media m Multimedia r Threedimensional artefacts and realia 07 Bibliographic level a Analytic (component part) c Collection m Monographic bibliographic item s Serial 08 Hierarchical level code # Hierarchical relationship undefined 0 No hierarchical relationship 1 Highest level record 2 Record below highest level (all levels below) 09 Undefined Contains a blank 10 Indicator length 11 Subfield identifier length 12-16 Base address of data 17 Encoding level # (blank) full level 1 sublevel 1 2 sublevel 2 3 sublevel 3 18 Descriptive cataloging form # (blank) record is in full ISBD form 1 record is in partial or incomplete ISBD form n record is in non-ISBD form 19 Undefined Contains a blank 20 Length of 'Length of field' 21 Length of 'Starting character position' 22 Length of implementationdefined portion 23 Undefined Contains a blank