https://www.abebooks.com/9781897310137/Deadly-Weapons-Koga-Ninja-Yamashiro-1897310137/plp
Deadly Weapons of the Koga Ninja - Yamashiro, Mr. Toshitora: 9781897310137 - AbeBooks
FOUND HERE in this compact but informative book are 50 pages containing some of the most deadly weapons and techniques of Ninjitsu ever recorded in writing....
deadly weaponsof thekoga ninja