Yousan youhou

Yousan youhou

Youzan youhou

Shuzan youhou

Soroban youhou

Yousanyouhou

洋算用法　初編

Nichigo youhou ihen

Sanpou chie no ita youhou

Yousan reidai : kotaetsuki

Yousan reidai toushiki

Yousan reidai toushiki

Shintai sokusan suuji : fu youhou

Shiyaku youhou

Kana youhou

Sanhei youhou

Shiyaku youhou

Sanzu youhou

洋算早学 二編

yozan hayamanabi

Rigaku yousan reidai

Rigaku yousan reidai

Kengankyou youhou

Taisuuhyou youhou

Kengankyou youhou