- unitid
-
{"value"=>"1742327", "type"=>"local_mss"}
- unitdate
-
{"value"=>"1950-1957", "type"=>"inclusive", "normal"=>"1950/1957"}
{"value"=>"1961-1962", "type"=>"inclusive", "normal"=>"1961/1962"}
- unittitle
-
{"value"=>"Professional, educational, scientific and technological book lists"}
- container
-
{"type"=>"box", "value"=>"490"}
- date_start
-
1950
- keydate
-
1950
- date_end
-
1962
- date_inclusive_start
-
1950
- date_inclusive_end
-
1962