- unitid
-
{"value"=>"3567241", "type"=>"local_mss"}
{"value"=>"6", "type"=>"local_mss_er"}
- unitdate
-
{"value"=>"1999 April", "type"=>"inclusive", "normal"=>"1999-04"}
- physdesc
-
{"format"=>"structured", "physdesc_components"=>[{"name"=>"extent", "value"=>"7 computer files", "unit"=>"computer_files"}, {"name"=>"extent", "value"=>"1.4 megabytes", "unit"=>"megabytes"}]}
- date_start
-
1999-04
- keydate
-
1999-04
- date_end
-
1999-04
- date_inclusive_start
-
1999
- date_inclusive_end
-
1999