848.txt

* MARC 21

[1] [CITE[MARC 21 Format for Bibliographic Data: 008: All Materials (Network Development and MARC Standards Office, Library of Congress)]]
([[Library of Congress Network Development and MARC Standards Office]]著, [TIME[2013-12-13 09:16:11 +09:00]])
<https://www.loc.gov/marc/bibliographic/bd008a.html>

[FIG(quote)[
[FIGCAPTION[
[2] [CITE[Top-level Elements and Attributes (MODS Ver. 3 User Guidelines: Metadata Object Description Schema, Library of Congress)]]
([TIME[2016-07-22 06:48:40 +09:00]])
<https://www.loc.gov/standards/mods/userguide/generalapp.html>
]FIGCAPTION]

> marc – This value identifies formatted according to MARC 21 rules in field 008/07-14 for dates of publication/issuance. Thus, this would only apply to the attribute in <dateIssued>. Examples include: YYYY (for year), MMDD (for month and day), 19uu (MARC convention showing unknown digits in a year date), 9999 (MARC convention showing that the end year date has not occurred or is not known). See Legal Characters section under field 008/06 of MARC Bibliographic
> <dateIssued encoding="marc">19uu</dateIssued>

]FIG]

* JAPAN/MARC MARC21

[3] [CITE[JAPAN/MARC MARC21フォーマットマニュアル - JAPANMARC_MARC21manual_A.pdf]], [TIME[2021-04-07T10:33:42.000Z]], [TIME[2022-12-11T13:13:35.920Z]] <http://cldj.jp/shisho/libcat/2021/05/data/JAPANMARC_MARC21manual_A.pdf#page=39>

>yyyymmddhhmmss.f

>yymmdd

[4] #page=52, #page=62

* メモ