Economic conditions 4 Economic history 4 History 3 Mines and mineral resources 3 Asiatisch-pazifischer Raum 2 Conditions économiques 2 Economic aspects 2 Entwicklung 2 Entwicklungspolitik 2 Geology 2 Publications périodiques 2 Sozioökonomischer Wandel 2 Aménagement urbain 1 Antiquities 1 Aspects économiques 1 Blacks 1 Catastrophes (Geology) 1 Cities and towns 1 City planning 1 Civilization 1 Cryptoexplosion structures 1 Cultural pluralism 1 Death and burial 1 Demographic surveys 1 Description and travel 1 Digitaltechnik 1 Discovery and exploration 1 ESCWA-Staaten 1 El Dorado 1 Ethnic relations 1