The house of my children.Collection /Comp.L.V. Plaksina.Predwell.A.A. Likhanova.- 2nd ed.

The house of my children.Collection /Comp.L.V. Plaksina.Predwell.A.A. Likhanova.- 2nd ed./ Katholikov, Alexander Alexandrovich.- M.: Publishing House of the Russian Children's Fund "House", 1997. -Persons.Treaty No. 246/23 LD dated 04 July 2023 605: The history of education in Russia..Electronic copy source: NBR Komi