A half-century miracle
Subtitle: how the discoveries of yesterday have become the necessities of today and are the foundation of great industries that are interwoven with every-day facts of daily life
Series: Public welfare and public utility service bulletin -- no. 1; Public welfare and public utility service bulletin -- no. 1.
Publisher: Illinois Committee on Public Utility Information
Published: 1920
Place of publication: Chicago, Ill
Language: eng
Subjects: Public utilities
Notes: Cover title.

"For use of debating clubs, oral English and current topic classes."