http://resource.geosciml.org/classifier/cgi/commodity-code/erbium
definition | Erbium is a chemical element in the lanthanide series, with the symbol Er and atomic number 68. A silvery-white solid metal when artificially isolated, natural erbium is always found in chemical combination with other elements on Earth. | ![]() |
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source | http://en.wikipedia.org/wiki/Erbium | ![]() |
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in scheme | commodity code | |||||
is primary topic of | erbium |