Technology
Subtitle: engineering our world
By: by John B. Gradwell, Malcolm Welch
Contributors: Welch, Malcolm
Edition: 7th ed.
Publisher: Goodheart-Willcox
Published: 2012
Place of publication: Tinley Park, Ill
Language: eng
ISBN-13: 9781605254289
Notes: Rev. ed. of Technology : shaping our world / John B. Gradwell, Malcolm Welch, Eugene Martin.  2004.

Includes index.