- unitid
-
{"value"=>"3282248", "type"=>"local_mss"}
{"value"=>"560060", "type"=>"local_mss_av"}
{"value"=>"12", "type"=>"local_call"}
- unitdate
-
{"value"=>"1974 May 6", "type"=>"inclusive", "normal"=>"1974-05-06"}
- unittitle
-
{"value"=>"Dr. H. Johannes Witteveen -- Economic Club of Detroit"}
- physdesc
-
{"format"=>"structured", "physdesc_components"=>[{"name"=>"extent", "value"=>"1 audio recording", "unit"=>"audio_recordings"}]}
- date_start
-
1974-05-06
- keydate
-
1974-05-06
- date_end
-
1974-05-06
- date_inclusive_start
-
1974
- date_inclusive_end
-
1974
- extent_statement
-
1 audio recording