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Clay earth pigmentClay earth pigments are naturally occurring minerals that have been used since prehistoric times as pigments. The primary types are |
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Clay_earth_pigment". A list of authors is available in Wikipedia. |
- Lanarkite
- Depo-Provera
- Oxygen_cycle
- Beryllonite
- Scientist resolves one of the holy grails of physical chemistry after 17 years of research - The Grotthuss Mechanism is revealed to intimately involve not one, two, or four molecules, as was suggested for more than 100 years of modern research, but a unique arrangement of three water molecules