. . . . . "DOIs required for collections, e.g. yearly data sets." . . . . "2021-12-31"^^ . "2021-01-01"^^ . . "RSA" . "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCoKFb7LKlXyBB7BUvjFF9bDJNk0WxH3Xerr4H3v/VCiRVshEDl3BZVekbMMmdRe+TOPyc8AOLd9IAL2VfVVD/T0rmCHk7Pw7DQjI96mwyeXhE7f4g0WG5UT5Pxxm0Rzy7IrYnEaaVDs7dkZUt952M6qWlHfTwCQDcXJhZfLiXoMwIDAQAB" . "WoqfyTU/iKXv0f4PpX8YtIJEHyq2zwvnodQADm8NF0V90YZOXQyTPqKDLcxG3MkAthmC551gwu0LFgfry+iIz14Ou9drjFHgV+yh6pxbk6La14y/kMdacJbCVjMevopEd8pO1tKhMWAZ6aZxLbHOaG9jg/a0GEyYYJoJRMCevHs=" . . "2023-01-17T21:52:38Z"^^ . . . .