Lokaldaten-Kategorie
          
               
               
               
MARC21       853     Captions and Pattern--Basic Bibliographic Unit (R)
  Subfields: 
             $a   First level of enumeration
             $b   Second level of enumeration
             $c   Third level of enumeration
             $d   Fourth level of enumeration
             $e   Fifth level of enumeration
             $f   Sixth level of enumeration
             $g   Alternative numbering scheme, first level of enumeration
             $h   Alternative numbering scheme, second level of enumeration
             $i   First level of chronology
             $j   Second level of chronology
             $k   Third level of chronology
             $l   Fourth level of chronology
             $m   Alternative numbering scheme, chronology
             $n   Pattern note
             $p   Pieces per issuance
             $t   Copy
             $u   Bibliographic units per next higher level (R)
                  **  Number of parts
                  ** var Varies
                  ** und Undetermined
              $   Numbering continuity (R)
                  ** c Number increments continuously
                  ** r Numbering restarts at the completion of the unit
             $w   Frequency
                  ** a Annual i Three times a week
                  ** b Bimonthly j Three times a month
                  ** c Semiweekly m Monthly
                  ** d Daily q Quarterly
                  ** e Biweekly s Semimonthly
                  ** f Semiannual t Three times a year
                  ** g Biennial w Weekly
                  ** h Triennial x Completely irregular
             $x   Calendar change
                  ** Month Day Season
                  ** 01-02 Month 01-31 Day 21 Spring 23 Autumn
                  .... 22 Summer 24 Winter
             $y   Regularity pattern
                  ** Publication code
                  ** o Omitted
                  ** p Published
                  ** Chronology code definition
                  ** d Day
                  ** m Month
                  ** s Season
                  ** w Week
                  ** Chronology Code
                  ** Day of week Season Day of month
                  ** mo Monday 21 Spring 01-31
                  ** tu Tuesday 22 Summer
                  ** we Wednesday 23 Autumn 
                  ** th Thursday 24 Winter 
                  ** fr Friday 
                  ** sa Saturday 
                  ** su Sunday 
                  ** Week of month Week Month 
                  ** 99 Last 01-53 01-12
                  ** 98 Next to Last
                  ** 97 Third to Last
                  ** 00 Every
                  ** 01 First
                  ** 02 Second
                  ** 03 Third
                  ** 04 Fourth
                  ** 05 Fifth
             $3   Materials specified
             $8   Link and sequence number

 Indic/etc.: 1st: Compressability and expandability
             0 Cannot compress or expand
             1 Can compress but not expand
             2 Can compress or expand
             3 Unknown
             2nd: Caption evaluation
             0 Captions verified; all levels present
             1 Captions verified; all levels may not be present
             2 Captions unverified; all levels present
             3 Captions unverified; all levels may not be present