Heat Transfer Research Inc.
http://www.htri-net.com

Tubular Exchangers Manufacturers Association
http://www.tema.org

American Society for Testing Materials
http://www.astm.org

American Society for Mechanical Engineers
http://www.asme.org

American Society of Heating, Refrigeration
and Air Conditioning Engineers
http://www.ashrae.org

Hydrocarbon Online
http://www.hydrocarbononline.com

Chemical Online
http://www.chemicalonline.com