petroleum ropa 4 [vynechat] ropný priemysel 2 [vynechat] armed conflicts 1 [vynechat] economic crises 1 [vynechat] fires 1 [vynechat] foreign policy 1 [vynechat] foreign trade 1 [vynechat] fossil fuels 1 [vynechat] fosílne palivá 1 [vynechat] heat transmission 1 [vynechat] hospodárska kríza 1 [vynechat] kings and rulers 1 [vynechat] natural gas 1 [vynechat] natural gas industry 1 [vynechat] nádrže 1 [vynechat] obchod s ropou 1 [vynechat] ozbrojené konflikty 1 [vynechat] panovníci 1 [vynechat] petroleum industry 1 [vynechat] petroleum policy 1 [vynechat] petroleum processing 1 [vynechat] petroleum trade 1 [vynechat] politics and government 1 [vynechat] politika a vláda 1 [vynechat] požiare 1 [vynechat] prenos tepla 1 [vynechat] priemysel zemného plynu 1 [vynechat] ropná politika 1 [vynechat] spracovanie ropy 1 [vynechat]