history urban transport 18 industry 15 city planning 15 towns 12 osobnosti 12 průmyslová revoluce 12 more ... chemical industry 11 economics 9 urban sociology 9 tramway transport 8 entrepreneurship 7 railway transport 7 air transport 6 public transport 6 dějiny průmyslu 5 economic theories 5 enterprise 5 mechanical engineering 5 trolleybus transport 5 economic growth 4 metallurgy 4 ferrous metallurgy 4 metallurgical works 4 innovation 4 urban bus transport 4 steelworks 4 trolleybuses and electrobuses 4 mining engineering 4 territorial planning 4 less ...