Ohcanbohtosat - ((geography 20th) OR (bibliography 20th)) century*
Ozuin - ((geography 20th) OR (bibliography 20th)) century* - eai gávdnon bohtosat.
Gánnáha geahččalit iešguđetlágán čállinhámiid:
- bibliography 20th »
- geography 20th »
Sáhtát oažžut lasi bohtosiid go hábmet iežat ohcama.
- Seđđon ohcamiin sáhttet gávdnot ohcanbohtosat, main leat seammasullasaš sánit: ((geography 20th) OR (bibliography 20th)) century~.
- Sánit AND, OR ja NOT sáhttet moivet ohcama; geahččal lasihit aisttonmearkkaid ohcansániid birra: "((geography 20th) OR (bibliography 20th)) century*".