Kazan medical journalKazan medical journal0368-48142587-9359Eco-Vector7902510.17816/kazmj79025MiscellaneousVII All-Union Congress of Obstetricians and Gynecologists in Leningrad on May 24-28, 1926.ManenkovP. V.info@eco-vector.comKhanina-GaidukF. P.info@eco-vector.com15091926229108110872408202124082021Copyright © 1926, Manenkov P.V., Khanina-Gaiduk F.P.1926Kazan Medical archiveКазанский медицинский архив