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Celestron Telescopes: Manufactures Celestron Telescopes, telescope accessories, optics, computerized telescopes, binoculars, spotting scopes and microscopes for serious and amateur astronomers and hobbyists

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Microscopes, microscope cameras and microscope accessories include Omano, Meiji Techno, Motic and Dino-Lite brands at The (Official) Microscope Store, LLC.

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World TrackerWorld Tracker is an Open Source Knowledge Database in visual form. This website is for education purposes only, for anyone who wants to learn without limits. As long the world is still here, you can count on World Tracker to bring the be...

ERIC is an online library of education research and information, sponsored by the Institute of Education Sciences (IES) of the U.S. Department of Education.

For iPhone developers who love their apps, App Annie keeps tabs on your apps, making it easy to track sales, rankings, and reviews from around the world.

Science.gov is a gateway to government science information provided by U.S. Government science agencies, including research and development results.