Kahan, S.
Have some sums to solve : the compleat alphametics book / by S. Kahan - Hyderabad : University Press, 1978. - XII, 114 p. : ill. ;
8173711372
Mathematics problem solving
Have some sums to solve : the compleat alphametics book / by S. Kahan - Hyderabad : University Press, 1978. - XII, 114 p. : ill. ;
8173711372
Mathematics problem solving