Fourier Series (Dover Books on Mathematics) - Paperback - GOOD

Fourier Series and Orthogonal Functions (Dover Books on Mathematics)

Fourier Series (Dover Books on Mathematics) - Paperback - VERY GOOD

Fourier Series (Dover Books on Mathematics) - Paperback, by Hardy G. H.; - Good

Fourier Series (Dover Books on Mathematics)

Fourier Series and Orthogonal Functions (Dover Books on Mathematics) by Harry F,