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External at Amazon Massive selection and low prices. Qualified orders over $25 ship free Amazon.com/electronics http://dictionary.reference.com/browse/externalExternal validity is the validity of generalized (causal) inferences in scientific studies, usually based on experiments as experimental validity. Inferences about cause-effect ... http://en.wikipedia.org/wiki/External_validityIn economics, an externality is an impact on any party not directly involved in an economic decision. An externality occurs when an economic activity causes external costs or ... http://en.wikipedia.org/wiki/ExternalSponsored Links Promotional USB Drives Amazing prices: 1GB - $7.50 Free Imprint. Free Proof. No Setup iPromo.com/Custom_USB_Drives http://dictionary.reference.com/search?q=external2003 External iT and External.net are trademarks of External Network Corp. http://www.external.net/ |
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