. . . . "Tiers of ontology and consistency constraints in geographical information systems"@nl . . "journals/gis/Frank01" . "Andrew U. Frank" . "im Oktober 2001 ver\u00F6ffentlichter wissenschaftlicher Artikel"@de . . "Tiers of ontology and consistency constraints in geographical information systems"@nl . . . . "Tiers of ontology and consistency constraints in geographical information systems"@en . "Tiers of ontology and consistency constraints in geographical information systems"@en . . . "667-678" . . "2001-10-01T00:00:00Z"^^ . "Tiers of ontology and consistency constraints in geographical information systems"@en . "wetenschappelijk artikel"@nl . . "7" . . . . . "Tiers of ontology and consistency constraints in geographical information systems"@nl . "10.1080/13658810110061144" . . "Tiers of ontology and consistency constraints in geographical information systems"@en . . . . . . . . . . . . "15" . . "\u043D\u0430\u0443\u043A\u043E\u0432\u0430 \u0441\u0442\u0430\u0442\u0442\u044F, \u043E\u043F\u0443\u0431\u043B\u0456\u043A\u043E\u0432\u0430\u043D\u0430 \u0432 \u0436\u043E\u0432\u0442\u043D\u0456 2001"@uk . .