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The Copper Development Association Inc. (CDA) is the market development, engineering and information services arm of the copper industry, chartered to enhance and expand markets for copper and its alloys in North America. CDA's website is an excellen...

Atotech is one of the world

Buy and sell electronics, cars, clothing, apparel, collectibles, sporting goods, digital cameras, and everything else on eBay, the world

Instrument and PCB prototyping equipment, dry-film lamination, supplies and accessories

Specializes in Antique Radio Schematics, Capacitors and Resistors. Carries antique radio schematic diagrams and electronic circuit service information for American, Canadian and European antique radios.

IEEE Xplore. Delivering full text access to the world

Instructables is the Biggest How To and DIY community where people make and share inspiring, entertaining, and useful projects, recipes, and hacks.

Providing researchers with access to millions of scientific documents from journals, books, series, protocols and reference works.

MIT is devoted to the advancement of knowledge and education of students in areas that contribute to or prosper in an environment of science and technology.

Learn from the mistakes of others and make better plumbing decisions. Download OnlinePlumbingAdvice today.

Engineers Edge - Total Design, Engineering & Manufacturing Resouces