Commodity Code

beryllium

http://resource.geosciml.org/classifier/cgi/commodity-code/beryllium

definition Beryllium is the chemical element with the symbol Be and atomic number 4. Because any beryllium synthesized in stars is short-lived, it is a relatively rare element in the universe. It is a divalent element which occurs naturally only in combination with other elements. Notable gemstones which contain beryllium include beryl (aquamarine, emerald) and chrysoberyl. more like this
notation
02.01.06 more like this
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source http://en.wikipedia.org/wiki/Beryllium more like this
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Resource
Concept
broader metal
narrower beryllium
in scheme commodity code
is primary topic of beryllium