Mathematics teaching series
Educational Explorers
by C. Gattegno
Educational Explorers 1963 Mathematics teaching series 2
v. 1 , v. 2 , v. 3 , v. 4
所蔵館8館
by G. Choquet ; [translated from the French by C. Gattegno]
Educational Explorers 1962, c1963 Mathematics teaching series
所蔵館4館