- unitdate
-
{"value"=>"circa 1987 Oct", "type"=>"inclusive", "certainty"=>"approximate", "normal"=>"1987-10"}
{"value"=>"1989-1991", "type"=>"inclusive", "normal"=>"1989/1991"}
- unittitle
-
{"value"=>"Published and near-print materials"}
- container
-
{"type"=>"box", "value"=>"18"}
{"type"=>"folder", "value"=>"6"}
- date_inclusive_start
-
1987
- date_inclusive_end
-
1991
- keydate
-
1987-10
- unitid
-
{"type"=>"local_mss", "value"=>"513080"}
- date_start
-
1987-10
- date_end
-
1991