The Secrets of Enoch. Once also known as the 2 Enoch appears to be an error:
For 1200 years this book was known only to a few people in Russia.
When it was finally revealed to the world in 1892, it was announced that it was a Slavonic version of The Book of Enoch.
This was wrong, Once translated, it was found that we have an entirely different book on and about Enoch.
Original Source: The Secrets of Enoch.see http://www.sacred-texts.com/bib/fbe/index.htm#section_002 | sacred-texts.com