Stern, Catherine
Children discover arithmetic : an introduction to structural arithmetic - London: George. G. Harrap, 1953. - 295p.
HB
Eng
Arithmetic
372.72044 / STC
Children discover arithmetic : an introduction to structural arithmetic - London: George. G. Harrap, 1953. - 295p.
HB
Eng
Arithmetic
372.72044 / STC