Copper Development Association http://www.copper.org Copper and Brass Servicenter Association http://www.cbsa.copper-brass.org/ Metalforming Online http://www.metalforming.com/ RWMA Online: Resistance Welding Manufacturers Association. http://www.rwma.org/ ASM International: American Materials Society http://www.asm-intl.org/ ASTM International: American Society for Testing and Materials. http://www.astm.org/ Foundry Trade Magazine: http://www.foundrymag.com/
