Circles and curves; by Arthur G. Razzell and K.G.O. Watts; illus. by Ellen Raskin.

Razzell, Arthur G.

Circles and curves; by Arthur G. Razzell and K.G.O. Watts; illus. by Ellen Raskin. - Doubleday, c1968. - 48 p. : ill. - Exploring mathematics. .


Geometry.