- unitid
-
{"value"=>"3399722", "type"=>"local_mss"}
{"value"=>"567148", "type"=>"local_mss_av"}
- unitdate
-
{"value"=>"1977 Spring", "type"=>"inclusive", "normal"=>"1977-03-20/1977-06-21"}
- unittitle
-
{"value"=>"Highest + Lowest Reproducible Tones"}
- physdesc
-
{"format"=>"structured", "physdesc_components"=>[{"name"=>"extent", "value"=>"1 audio recording", "unit"=>"audio_recordings"}]}
- scopecontent
-
{"value"=>"<p>More or less test of speakers and recording practicality. Counter defective so could not measure frequencies properly at the time.</p>"}
- date_start
-
1977-03-20
- keydate
-
1977-03-20
- date_end
-
1977-06-21
- date_inclusive_start
-
1977
- date_inclusive_end
-
1977
- extent_statement
-
1 audio recording