- Chemicool Periodic Table
- Periodic table featuring a wealth of element information including atomic, weight, and discovery information.
- EquationSheet.com
- Allows users to create a personal equation sheet from a database of science and math equations.
- GrayLIT Network
- Provides a full-text search across the gray literature of multiple government agencies within a science portal of technical reports.
- Science Musings
- Random science related thoughts from Chet Raymo.
- WebElements Periodic Table
- Online periodic table featuring element information and structure.
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