Opyt massovoĭ letneĭ shkoly
By: Vl. Pi͡atnit͡skiĭ ; pod red. A. Volkova ; s predisloviem T͡Sentralʹnogo bi͡uro i͡unykh pionerov pri T͡SK VLKSM.
Publisher: "Doloĭ negramotnostʹ"
Published: 1927
Place of publication: Moskva
Language: rus
Number of pages: 67