This is considered one of the standards in the Bujinkan Ninjutsu system, if you do not have access to the scrolls themselves. The book is divided into thirds, Ten (heaven) being from 1st Dan to 4th Dan, Chi (earth) being from 5th Dan to 10th Dan, and Jin (man) being from 11th Dan to 15th Dan. Translated by several people, but many translation errors were corrected by Dai-Shihan Steeves. 51 pages, not including the original Japanese which comes with it.
