Estimation and mental computation : 1986= 1986 yearbook / ed. Harold L. Schoen, Marilyn J. Zweng
Estimation and mental computation : 1986= 1986 yearbook / ed. Harold L. Schoen, Marilyn J. Zweng
. - Reston : National Council of Teachers of Mathematics, imp. 1988
. - VIII, 248 p. : il. 24 cm
0-87353-226-0 (Encadernado)
51:372.851
372.851:51