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The Internet is a vast pool of information that can sometimes be overwhelming. A good place to begin research is by using a general search engine (some popular search engines are listed in the “Suggested Readings” section at the end of this chapter). Useful information is also available on Web sites of industry organizations such as WEF (http://www.wef.org), ISA (http://www.isa.org), and ITA (http://www.instrument.org).