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