Igor Pavlovich Shaskol'skii
... that Russian historian Igor Pavlovich Shaskol'skii helped build defensive structures during the Siege of Leningrad?
... that Russian historian <b id="mwBdg"><a href="./Igor_Pavlovich_Shaskol'skii" id="mwBdk" rel="mw:WikiLink" title="Igor Pavlovich Shaskol'skii">Igor Pavlovich Shaskol'skii</a></b> helped build defensive structures during the <a href="./Siege_of_Leningrad" id="mwBdo" rel="mw:WikiLink" title="Siege of Leningrad">Siege of Leningrad</a>?