855 CAPTIONS AND PATTERN--INDEXES (R)
Indicators Undefined; each contains a blank (#) ALEPH uses a special subset of MARC 853/4/5 and 863/4/5 fields for prediction patterns for journals, in order to facilitate serials control and issue check-in:
Subfield Codes $a First level of enumeration (NR) $b Second level of enumeration (NR) $c Third level of enumeration (NR) $d Fourth level of enumeration (NR) $e Fifth level of enumeration (NR) $f Sixth level of enumeration (NR) $g Alternative numbering scheme, first level of enumeration (NR) $h Alternative numbering scheme, second level of enumeration (NR) $i First level of chronology (NR) $j Second level of chronology (NR) $k Third level of chronology (NR) $l Fourth level of chronology (NR) $o Type of index (NR) $u Units per next higher level (R) $v Numbering continuity (R) $w Frequency (NR) $y Regularity pattern (NR)