strikes and lockouts 3 [vynechat] štrajky 3 [vynechat] alternative energy sources 1 [vynechat] alternatívne energetické zdroje 1 [vynechat] climate changes 1 [vynechat] communist regime 1 [vynechat] dejiny 1 [vynechat] environmental problems 1 [vynechat] environmentálne problémy 1 [vynechat] fossil fuels 1 [vynechat] fosílne palivá 1 [vynechat] global warming 1 [vynechat] globálne otepľovanie 1 [vynechat] greenhouse effect 1 [vynechat] history 1 [vynechat] industrial enterprises 1 [vynechat] klimatické zmeny 1 [vynechat] komunistický režim 1 [vynechat] menová reforma (1953 : Československo) 1 [vynechat] monetary reform (1953 : Czechoslovakia) 1 [vynechat] priemyselné podniky 1 [vynechat] protest movements 1 [vynechat] protestné hnutie 1 [vynechat] príemysel kaučuku 1 [vynechat] robotníci 1 [vynechat] robotnícke hnutie 1 [vynechat] rubber industry 1 [vynechat] skleníkový efekt 1 [vynechat] social change 1 [vynechat] social movements 1 [vynechat]