RUCH, G.M.
Understanding mathematics; teacher's guidebook for the mathematics and life program, by G.M. Ruch, F.B. Knight, J.W. Studebaker & G.E. Hawkins.
RUCH, G.M. Understanding mathematics; teacher's guidebook for the mathematics and life program, by G.M. Ruch, F.B. Knight, J.W. Studebaker & G.E. Hawkins. © 6Apr39; AA294915. Scott, Foresman & Co. (PWH); 3Jan67; R400333.
Scott, Foresman & Co.|PWH