Houen sankei

Houen sankei

Houen sankei

Sampou houen kagami

Sanpou houen kagami

Houen kikou

Houen kikou

Sonshi sankei

Gosou sankei

Houen shinpou : uchigo jouseki

Houen shinpou : uchigo jouseki

Shuuhi sankei seikaizu

Shuuhi sankei kokujikai

Gakusei hitsuyou meiji sankei

Sankei

方円算経逐斜

Taisei sankei

Taisei sankei

Taisei sankei

Taisei sankei

Taisei sankei

Shuuhi sankei kokujikai

Shuuhi sankei kokujikai

Shiseidou ganyaku houen bassui

方円算経　附録捷術補