Ringenberg,, Lawrence A. A portrait of 2 : a brief survey of the elementary number systems / Laurence A. Ringenberg

A portrait of 2 : a brief survey of the elementary number systems / Laurence A. Ringenberg . - Washington : National Council of Teachers of Mathematics, imp. 1995 . - : il. 42 p. 23 cm
51:372.851
372.851:51