- unitid
-
{"value"=>"10"}
- unitdate
-
{"value"=>"1984", "type"=>"inclusive", "normal"=>"1984"}
- unittitle
-
{"value"=>"Pan American Health Organization. The Expanded Program on Immunization (EPI): Poliomyelitis in the Americas and Its Eradication by 1990. Washington, D.C.: Organizacion Panamericana de la Salud, Oficina Sanitaria Panamericana, Oficina Regional de la Organi"}
- container
-
{"type"=>"reel", "value"=>"141"}
{"type"=>"box", "value"=>"171"}
{"type"=>"folder", "value"=>"9"}
- date_start
-
1984
- keydate
-
1984
- date_end
-
1984
- date_inclusive_start
-
1984
- date_inclusive_end
-
1984