A puzzle a day /
Lucas, Vivien.
A puzzle a day / by Vivien Lucas. - Norfolk : Tarquin, 2005. - 96 p. : 16x16 cm.
189961852X
Mathematical recreations.
A puzzle a day / by Vivien Lucas. - Norfolk : Tarquin, 2005. - 96 p. : 16x16 cm.
189961852X
Mathematical recreations.