Science » Science Reference

While many of the websites listed in this science area of The Directory Library, this area is dedicated specifically to providing websites that offer science references in a range of areas. Please browse through the sites listed or if you have a valuable science reference website that you would like to see listed here, please click the Submit link and we will gladly publicise your website as well as those all-important social media pages.
  • Ask Numbers - An online conversion website providing valuable conversions for metric, Imperial and US systems in a number of areas including temperature, volume, weight and mass.
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  • Physics and Astronomy Reference - An extensive collection of online professional physics and astronomy references supplied by
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