Seven ages of invention
By: by Cyril Hall, with sixteen half-tone plates and other illustrations.
Series: The enterprise library
Publisher: Blackie & son, limited
Published: 1930
Place of publication: London; Glasgow
Language: eng
Number of pages: 255
Subjects: Inventions
Notes: Chapters on the age of steam, steel, electricity, the heat-engine, the loom, flight, and wireless.