- unitid
-
{"value"=>"3187120", "type"=>"local_mss"}
{"value"=>"323733", "type"=>"local_mss_av"}
- unitdate
-
{"value"=>"1973 April 19", "type"=>"inclusive", "normal"=>"1973-04-19"}
- unittitle
-
{"value"=>"Vries, Charles de [3 and 4]"}
- physdesc
-
{"format"=>"structured", "physdesc_components"=>[{"name"=>"extent", "value"=>"1 audio recording", "unit"=>"audio_recordings"}]}
- date_start
-
1973-04-19
- keydate
-
1973-04-19
- date_end
-
1973-04-19
- date_inclusive_start
-
1973
- date_inclusive_end
-
1973