Abacus
The Japanese abacus
Takashi Kojima
The warlord's beads
Virginia Walton Pilegard
The Abacus
Jesse Dilson
Against the gods
Peter L. Bernstein
Soroban for everyone
Banshuya Soroban & Co., ltd., Tokyo
Advanced abacus
Takashi Kojima
The Japanese abacus explained
Y. Yoshino
The history of the abacus
J. M. Pullan
The abacus: a pocket computer.
Jesse Dilson
Number words and number symbols
Karl Menninger
Soroban, the Japanese abacus
Nihon Shōkō Kaigisho.
HOW to USE A CHINESE ABACUS
P. A. U. L. GREEN
Nihon no soroban
Youemon Yamazaki
The magic calculator
Y. Tani
Abacus arithmetic
Welton J. Crook
Shinsen hayawari niichi tensaku no go
Koremasa Yasunaga
The Japanese abacus explained.
Yōzō Yoshino
Zhu suan jiao xue de yan jiu
Richang Cao
珠算速計法
華印椿
Abaques ou nomogrammes
Armand Giet
Zahlwort und Ziffer
Karl W. Menninger
The commercial revolution and the beginning of Western mathematics in Renaissance Florence, 1300-1500
Warren Van Egmond
Number machines
Forrest M. Mims
Number words and number symbols
Karl A. Menninger
HOW TO USE A CHINESE ABACUS
PAUL GREEN
Jian ming zhu suan.
The abacus: its history, its design, its possibilities in the modern world
Parry Hiram Moon
The first abacus
George Von Hilsheimer
The fundamental operations in bead arithmetic
Tak Ming Kwa
Contribution à la théorie générale des abaques à plans superposés
Georges R. Boulanger
The Japanese abacus
Kojima Takashi.
五字珠算法
李鑫
Soroban hitorigeiko
Seiyōdō Hashimoto
How to use the Chinese abacus.
Japanese Abacus (Medium)
Takashi Kojima
Japanese Abacus (Small)
Takashi Kojima
Japanese Abacus (Large)
Takashi Kojima
Shōgaku shuzan reidai
Makoto Kurosaki
Shōgaku shuzan nyūmon
Sannosuke Kusakabe
Shinsen shuzan gosendai
Kōzō Ōshima