- unitid
-
{"value"=>"3590742", "type"=>"local_mss"}
{"value"=>"25", "type"=>"local_mss_er"}
- unitdate
-
{"value"=>"1990s-2015", "type"=>"inclusive", "normal"=>"1990/2015"}
- physdesc
-
{"format"=>"structured", "physdesc_components"=>[{"name"=>"extent", "value"=>"484 computer files", "unit"=>"computer_files"}, {"name"=>"extent", "value"=>"90.7 megabytes", "unit"=>"megabytes"}]}
- date_start
-
1990
- keydate
-
1990
- date_end
-
2015
- date_inclusive_start
-
1990
- date_inclusive_end
-
2015