since the Source for this element is or includes '[OSoI]', accept the data if it is 'supplied' (e.g., in square brackets, or explained in a note), as long as it seems applicable; indicate that the data is 'supplied' (with square brackets or a note 2.2.4), if that has not been done
but be sure to check the resource carefully, if the data for the element is Core, or if the data is important for differentiating the resource from a similar resource
Check below, for any useful Notes
General Notes:
enter dates 'as found', so:
enter a month and year (e.g., “July 2013”) or a day, month, and year (e.g., “10 July 2013”) as found, if such a date is clearly stated as a publication, issue, or release date
enter Roman numerals as found (e.g., “MCMX”) if you are following LC practice (1.8.2 Alternative); otherwise substitute Arabic numbers
data must be provided for this element; so if no publication date is available:
supply a date from a first printing date (e.g., first printing 2009 as $c[2009]), a distribution date, or a copyright date (copyright 2012 as $c[2012]), in that order of preference; consider also adding a date used to supply the publication date, as an appropriate element
if no dates are available, guess a publication date if at all possible (see 1.9.2), otherwise enter [date of publication not identified]
Editing Notes:
if the date of publication data on the resource is given as:
a month and year, or month, day, and year, but the date provided as an element in the record contains only an Arabic year, change the date in the element to match the resource
Roman numerals, but the date provided as an element in the record contains only an Arabic year, check your library's policy about this option (see 1.8.2 Alternative) and edit accordingly
if date of publication data is missing, either supply a date (see 1.9.2) or enter [date of publication not identified]]. For additional elements to add when supplying dates, see hints at:
if a copyright date has been given as the date of publication in the record (264_1$c) and there is no publication date on the resource, then use that copyright date to supply the publication date (in square brackets) and add the copyright date again as a copyright date (264_4$c)