Ohcanbohtosat - "(( ((geography 20th) OR (biography 20th)) century ) OR ( bibliography 20th century ))"
Ozuin - "(( ((geography 20th) OR (biography 20th)) century ) OR ( bibliography 20th century ))" - eai gávdnon bohtosat.
Sáhtát oažžut lasi bohtosiid go hábmet iežat ohcama.
- Sáhtát oažžut eanet bohtosiid go sihkut aisttonmearkkaid: (( ((geography 20th) OR (biography 20th)) century ) OR ( bibliography 20th century )).