<https://vintageadvertisingposter.com/product-details/leningrad-festival-of-arts-june-1935-vintage-advertising-culture-tourism-poster/leningrad-festival-of-arts-june-1935-vintage-advertising-culture-poster-vintagelized/#webpage>
<http://schema.org/dateModified>
"2015-09-09T18:50:33+00:00"^^<http://schema.org/Date>
<https://vintageadvertisingposter.com/product-details/leningrad-festival-of-arts-june-1935-vintage-advertising-culture-tourism-poster/leningrad-festival-of-arts-june-1935-vintage-advertising-culture-poster-vintagelized/>