For citations:

Veremenko V.A., Sinova I.V. Theoretical basis and research methods of children’s hygiene from middle of the 18th to the early 20th century. Северный регион: наука, образование, культура. 2025;26(3):54-65. (In Russ.) https://doi.org/10.35266/2949-3463-2025-3-6