Czeslaw Lejewski
... that Czeslaw Lejewski, Polish philosopher and logician, who studied under Jan Lukasiewicz and Karl Popper, became one of the members of the Lwów-Warsaw School of Logic?
... that <b id="mwC4M"><a class="mw-redirect" href="./Czeslaw_Lejewski" id="mwC4Q" rel="mw:WikiLink" title="Czeslaw Lejewski">Czeslaw Lejewski</a></b>, Polish philosopher and logician, who studied under <a class="mw-redirect" href="./Jan_Lukasiewicz" id="mwC4U" rel="mw:WikiLink" title="Jan Lukasiewicz">Jan Lukasiewicz</a> and <a href="./Karl_Popper" id="mwC4Y" rel="mw:WikiLink" title="Karl Popper">Karl Popper</a>, became one of the members of the <a class="mw-redirect" href="./Lwów-Warsaw_School_of_Logic" id="mwC4c" rel="mw:WikiLink" title="Lwów-Warsaw School of Logic">Lwów-Warsaw School of Logic</a>?