Sojutsu (English Translation) Book by Masaaki Hatsumi
English Translation of Soke's now out of print Japanese book.
This is a very detailed work done with much research.
Soke uses kyojutsu word play in teaching the higher aspects of this Kukishinden Yari waza manual.
46 pages, no pictures but a great textual reference.
It refers to images when there are none. It's basically a pamphlet, not a book, with so little valid information in it that it is alarming. Comically bad.
This is more of a demo than instruction, goes along with the vid, but no actual instruction such as the stances, basic moves, simple kata. None of that. Just fast demo's with no break down. Not an instructional book, per say.