Yamanaka K. Jiu jitsu or jiu-do selection from kodokwan method

Tokyo, 1918. — 178 p.The value of Jiu-Jutsu is proven by the fact that wherever known the advantages of this art are greatly appreciated, and its principles are incorporated into the systems of physical culture in use in that country. Indeed, it is no longer a means only for self-defense or intellectual culture, but is a perfect method of physical development.