- unitid
-
{"value"=>"3617010", "type"=>"local_mss"}
{"value"=>"1", "type"=>"local_mss_er"}
- unitdate
-
{"value"=>"1971-2000", "type"=>"inclusive", "normal"=>"1971/2000"}
- physdesc
-
{"format"=>"structured", "physdesc_components"=>[{"name"=>"extent", "value"=>"355 computer files", "unit"=>"computer_files"}, {"name"=>"extent", "value"=>"7.5 megabytes", "unit"=>"megabytes"}]}
- date_start
-
1971
- keydate
-
1971
- date_end
-
2000
- date_inclusive_start
-
1971
- date_inclusive_end
-
2000