- unitid
-
{"value"=>"1026543", "type"=>"local_mss"}
- unitdate
-
{"value"=>"circa 1850-1860", "type"=>"inclusive", "certainty"=>"approximate", "normal"=>"1850/1860"}
- date_inclusive_start
-
1850
- date_inclusive_end
-
1860
- keydate
-
1850
- date_start
-
1850
- date_end
-
1860
- unittitle
-
{"value"=>"Natuurkundige Voerlezingen. [Natural Science Lectures] with plates in each volume"}
- physdesc
-
{"format"=>"structured", "physdesc_components"=>[{"name"=>"extent", "value"=>"3 volumes"}], "supress_display"=>true}
- container
-
{"type"=>"box", "value"=>"6"}
- extent_statement
-
3 volumes