Magic square :
Ghose,Neela.
Magic square : Primary mathematics book 4, - New Delhi : Oxford university press, 2003. - v, 186 p. ill. 22.8 cm.
0195663411
Magic square : Primary mathematics book 4, - New Delhi : Oxford university press, 2003. - v, 186 p. ill. 22.8 cm.
0195663411