Borrows - Mental Arithmetic Grids - New paperback or softback - X555z

Raub - Werner Mental Arithmetic - paperback or softback - X555z

Scott - Modern Mental Arithmetic microform - New paperback or softba - X555z

Young - Rudimentary Treatise on Arithmetic - New paperback or softback - X555z

Smith - Teaching of Arithmetic - New paperback or softback - 56 - X555z

Quackenbos - A Mental Arithmetic - New paperback or softback - 50 - X555z

Thomson - A Key to Higher Arithmetic - New paperback or softback - X555z

Weidenhamer - Mental Arithmetic - New paperback or softback - 46 - X555z