- unitid
-
{"value"=>"3599663", "type"=>"local_mss"}
- unitdate
-
{"value"=>"1885", "type"=>"inclusive", "normal"=>"1885"}
- unittitle
-
{"value"=>"<span class=\"title\">Choice Vocal Duets</span>"}
- langmaterial
-
{"value"=>"Primarily English."}
- scopecontent
-
{"value"=>"<p>Contains twenty-seven songs by a variety of composers.</p>"}
- container
-
{"type"=>"box", "value"=>"102"}
{"type"=>"folder", "value"=>"3"}
- date_start
-
1885
- keydate
-
1885
- date_end
-
1885
- date_inclusive_start
-
1885
- date_inclusive_end
-
1885