- unitid
-
{"value"=>"3406999", "type"=>"local_mss"}
{"value"=>"12", "type"=>"local_mss_er"}
- unitdate
-
{"value"=>"1991-1995", "type"=>"inclusive", "normal"=>"1991/1995"}
- physdesc
-
{"format"=>"structured", "physdesc_components"=>[{"name"=>"extent", "value"=>"35 computer files", "unit"=>"computer_files"}, {"name"=>"extent", "value"=>"527.4 kilobytes", "unit"=>"kilobytes"}]}
- date_start
-
1991
- keydate
-
1991
- date_end
-
1995
- date_inclusive_start
-
1991
- date_inclusive_end
-
1995