Kazan medical journalKazan medical journal0368-48142587-9359Eco-Vector7698510.17816/kazmj76985Research ArticleSexual issues. Leningrad, 1924.51 pp. In 16.GruzdevV.info@eco-vector.com151019242088818822807202128072021Copyright © 2021, Gruzdev V.2021<p>The need for timely, even in childhood, familiarization of each and every one with the basics of the physiology of sexual life, its hygiene, the prevention of sexual diseases, etc., has long been recognized and preached by doctors, but only recently this familiarization began to be carried out in more or on a smaller scale.</p>Kazan Medical archiveКазанский медицинский архив