Obschepoleznye svedeniya. This book, "Rukovodstvo k umstvennomu razvitiyu pri nachal"nom obuchenii.", by Luk"yanov N.L., is a replication of a book originally published before 1846. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible. This book was created using print-on-demand technology. Thank you for supporting classic literature.