Commodity Code

tungsten

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

definition Tungsten, also known as wolfram, is a chemical element with the chemical symbol W and atomic number 74. The word tungsten comes from the Swedish language tung sten directly translatable to heavy stone, more like this
notation
02.01.28 more like this
W more like this
source http://en.wikipedia.org/wiki/Tungsten more like this
type
Resource
Concept
broader metal
narrower tungsten
in scheme commodity code
is primary topic of tungsten