Hubbell, Roth & Clark, Inc. Consulting Engineers
http://www.hrc-engr.com

Bridging the Technology Gap
http://www.eng.nsf.gov/engnews/2000/00-10_Bridging_the_Tech_Gap/00-10_bridging_the_tech_gap.htm

Sumitomo Corporation ( English Version )
http://www.sumitomocorp.co.jp/english/index.htm

ACI International - American Concrete Institute
http://www.aci-int.net/general/home.asp