Chisanbop : finger calculation method, a new mathematical system /

Bibliographic Details
Main Author:	Lieberthal, Edwin M.
Other Authors:	Pai, Hang Young, Pai, Sung Jin
Format:	Book
Language:	English
Published:	Mount Vernon, N.Y. : Chisanbop Enterprises ; [1978]
Series:	Home study book.
Subjects:	Arithmetic > Study and teaching.