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- Business: Publishing and Printing: Publishing: Academic and Technical (153)
- Reference (59,758)
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- Physics and Science Reference by PhysLINK.com
- Includes physical constants, online unit conversions, periodic table of elements, exact time, fundamental physical formulae and equations.
- Astronomical Constants from NASA - Contains astronomical/space constants and equations.
- Beta-Theta - Gives general defintions, background and examples from the science fields of biology, physics, chemistry, math, and history. Includes forum boards.
- The Constants and Equations Pages - Expands reference resources for science, maths, and astronomy.
- DOE Community - Searchable database for reports that are generated by federally funded projects.
- RefScout - A weekly, scientific reference mailing service.