open university system
... that in the 1950s, the Soviet Union introduced an open university system to enable working-class students to become useful functionaries of the Communist party?
... that in the 1950s, the Soviet Union introduced an <b id="mwBIE"><a class="mw-redirect" href="./Open_university" id="mwBII" rel="mw:WikiLink" title="Open university">open university system</a></b> to enable working-class students to become useful functionaries of the Communist party?