What is Mathematics? :
Courant, Richard, 1888-1972.
What is Mathematics? : An elementary approach to ideas and methods / Richard Courant and Herbert Robbins. - London : Oxford University Press, 1941. - 521 p. : illus. ; 24 cm.
Open access.
4125632
Mathematics.
What is Mathematics? : An elementary approach to ideas and methods / Richard Courant and Herbert Robbins. - London : Oxford University Press, 1941. - 521 p. : illus. ; 24 cm.
Open access.
4125632
Mathematics.