01	Publication date	Nominal date of publication
09	Public announcement date	Date when a new product may be announced to the general public
10	Trade announcement date	Date when a new product may be announced for trade only
11	Date of first publication	Date when the work incorporated in a product was first published
12	Last reprint date	Date when a product was last reprinted
13	Out-of-print / deletion date	Date when a product was declared out-of-print or deleted
16	Last reissue date	Date when a product was last reissued