K dissertatsii D.G. Konovalova: "Religioznyj ekstaz v russkom misticheskom sektantstve". This book, "K dissertatsii D.G. Konovalova", by I. G. Ajvazov, is a replication of a book originally published before 1909. 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.