- unitid
-
{"value"=>"3387855", "type"=>"local_mss"}
{"value"=>"182", "type"=>"local_mss_er"}
- unitdate
-
{"value"=>"1997-1999", "type"=>"inclusive", "normal"=>"1997/1999"}
- physdesc
-
{"format"=>"structured", "physdesc_components"=>[{"name"=>"extent", "value"=>"19 computer files", "unit"=>"computer_files"}, {"name"=>"extent", "value"=>"300.1 kilobytes", "unit"=>"kilobytes"}]}
- date_start
-
1997
- keydate
-
1997
- date_end
-
1999
- date_inclusive_start
-
1997
- date_inclusive_end
-
1999