Tuzex
... that Tuzex shopping vouchers were used as unofficial parallel currency in communist Czechoslovakia?
... that <b id="mwBHA"><a href="./Tuzex" id="mwBHE" rel="mw:WikiLink" title="Tuzex">Tuzex</a></b> shopping vouchers were used as unofficial parallel currency in communist <a href="./Czechoslovakia" id="mwBHI" rel="mw:WikiLink" title="Czechoslovakia">Czechoslovakia</a>?