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| Searchable directory, arranged by field, of equations, constants, symbols and SI units. Also features LaTEX utilities, software links. |
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| Google PR |
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| collective of scientists with a mission to present mathematical and chemistry experiments online in a dynamic and interactive way. |
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| Google PR |
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| features articles on a variety of topics on the history, innovations, milestones, pioneers, and legal trends that shape the world of media, information technology, telecommunications, and broadband. |
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| Google PR |
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| A weekly, scientific reference mailing service. Screens databases covering life and medical sciences for the key words or the combination of key words specified and will automatically update with any abstract that has come up during the last seven days. Free service. |
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| Google PR |
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