- unitid
-
{"value"=>"172680", "type"=>"local_mss"}
- unitdate
-
{"value"=>"1944", "type"=>"inclusive", "normal"=>"1944"}
{"value"=>"1951-1952", "type"=>"inclusive", "normal"=>"1951/1952"}
- unittitle
-
{"value"=>"Grand Canyon National Park"}
- physdesc
-
{"format"=>"simple", "value"=>"13"}
- container
-
{"type"=>"box", "value"=>"10"}
- date_start
-
1944
- keydate
-
1944
- date_end
-
1952
- date_inclusive_start
-
1944
- date_inclusive_end
-
1952