History of Refrigeration
Refrigeration History
Refrigeration Facts
Refrigeration Invention
Picture Of Diagram Of A Vapor Compression Refrigeration System
Source:
http://en.wikipedia.org/w/index.php?title=Image%3ARefrigeration.png, en.wikipedia.org
Author:
Original uploader was Keenan Pepper at en.wikipedia
Licence:
GNU Free Documentation License, Creative Commons Attribution-Share Alike 3.0 Unported