- unitid
-
{"value"=>"3407048", "type"=>"local_mss"}
{"value"=>"47", "type"=>"local_mss_er"}
- unitdate
-
{"value"=>"1987-1989", "type"=>"inclusive", "normal"=>"1987/1989"}
- physdesc
-
{"format"=>"structured", "physdesc_components"=>[{"name"=>"extent", "value"=>"7 computer files", "unit"=>"computer_files"}, {"name"=>"extent", "value"=>"43.0 kilobytes", "unit"=>"kilobytes"}]}
- date_start
-
1987
- keydate
-
1987
- date_end
-
1989
- date_inclusive_start
-
1987
- date_inclusive_end
-
1989