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by National Council of Teachers of Mathematics
by National Council of Teachers of Mathematics. Commission on Standards F
by Allinger, Glenn D.; Hess, Adrien L.; National Council of Teachers of Mathematics
by Moses, Barbara; National Council of Teachers of Mathematics
by National Council of Teachers of Mathematics Staff
by Peitgen, Heinz-Otto; Jurgens, Hartmut; Saupe, Dietmar; et al.