http://general-terms.thesaurus.ekt.gr/vocabhttp://general-terms.thesaurus.ekt.gr/vocab?tema=9759working class http://general-terms.thesaurus.ekt.gr/vocab?tema=9759 lower social classes BT http://general-terms.thesaurus.ekt.gr/vocab?tema=9759 workers RT http://general-terms.thesaurus.ekt.gr/vocab?tema=9759 social alienation RT