- unitid
-
{"value"=>"3407049", "type"=>"local_mss"}
{"value"=>"48", "type"=>"local_mss_er"}
- unitdate
-
{"value"=>"1990s", "type"=>"inclusive", "normal"=>"1990/1999"}
- physdesc
-
{"format"=>"structured", "physdesc_components"=>[{"name"=>"extent", "value"=>"4 computer files", "unit"=>"computer_files"}, {"name"=>"extent", "value"=>"74.8 kilobytes", "unit"=>"kilobytes"}]}
- date_start
-
1990
- keydate
-
1990
- date_end
-
1999
- date_inclusive_start
-
1990
- date_inclusive_end
-
1999