Leningrad Polytechnical Institute
...that the Leningrad Polytechnical Institute was the only place in the besieged city that evaluated the Ph.D. and Doctor of Science dissertations?
...that the <b id="mwCO4"><a class="mw-redirect" href="./Saint_Petersburg_Polytechnical_University" id="mwCO8" rel="mw:WikiLink" title="Saint Petersburg Polytechnical University">Leningrad Polytechnical Institute</a></b> was the only place in the <a href="./Siege_of_Leningrad" id="mwCPA" rel="mw:WikiLink" title="Siege of Leningrad">besieged city</a> that evaluated the <a class="mw-redirect" href="./Kandidat" id="mwCPE" rel="mw:WikiLink" title="Kandidat">Ph.D.</a>  and <a href="./Doctor_of_Science" id="mwCPI" rel="mw:WikiLink" title="Doctor of Science">Doctor of Science</a> dissertations?