This book, "Pamyatniki drevnej pismennosti. 126. Sijskij ikonopisnyj podlinnik. Vypusk 4", by N.V. Pokrovskij, is a replication. 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.