Zeitcode
        engl.: Time period code; Chronological coverage code
   Definition: Zeitraum oder Zeitpunkt in codierter Form
               
               
               
Pica+        031@01  
        Anm. 2stellige Codes, z.B. gk = Kirchengeschichte
Pica3        1111    

Pica+        045R    Zeitschlagwort (Jahreszahlen)
             042D    Zeitcode UDK
Pica3        531X    Zeitschlagwort (Jahreszahlen)
             813     Zeitcode UDK

MAB2         039     Zeitcode (W5)
     Indik.: 
              #   (nicht spezifiziert
              a   Zeitcode der UDK
              b   Time Period Code der LC
              c   Zeitcode nach Jahreszahlen
              z   Sonstiger Zeitcode

MAB          902z    Zeitschlagwort als Kettenglied


MARC21       045     Time Period of Content
  Subfields: 
             $a   Time period code (R)
             $b   Formatted 9999 B.C. through A.D. time period (R)
             $c   Formatted pre-9999 B.C. time period (R)

 Indic/etc.: 1st: Type of time period in subfield $b or $c
             # Subfield $b or $c not present
             0 Single date/time
             1 Multiple single dates/times
             2 Range of dates/times
             2nd: Undefined; contains a blank (#)
             
MARC21       648     Subject added entry--Chronological term (R)
  Subfields: 
             $a   Chronological term
             $v   Form subdivision
             $x   General subdivision$y Chronological subdivision
             $z   Geographic subdivision (R)
             $2   Source of heading or term (NR) (Code from: MARC Code Lists for
                     Relators)
             $3   Materials specified (NR)
             $6   Linkage (NR) See Control Subfields
             $8   Field link and sequence number (R) (See Control Subfiels)

     Values: 
             #4021st:   Undefined
              #   Basic
              0   Faceted
             2nd:   Thesaurus:
              0   - LCSH
              1   - LC Children's Lit.
              2   - MeSH
              3   - NAL
              4   - Not specif.
              5   - Canadian SH
              6   - Rép. de ved. mati
              7   - Source specified in $2


UNIMARC      122     Coded data field: Time period of item content

UNIMARC      661     

     Values: 
             Appendix   E



allegro      #30h