International mobility conference 6 : abstract book : 9-12 September Madrid (España) - International Mobility Conference 1991 : Madrid, Španělsko); Spanish National Organization of the Blind ([Madrid : Spanish National Organization of the Blind (O. N. C. E.), 1991)
Keywords: mobilita (doprava); osoby se zrakovým postižením; prostorová orientace; people with visual disabilities; spatial orientation; transportation mobility; abstrakta