Commodity Code

yttrium

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

definition Yttrium is a chemical element with symbol Y and atomic number 39. It is a silvery-metallic transition metal chemically similar to the lanthanides and it has often been classified as a "rare earth element. more like this
notation
02.01.03.01.09 more like this
Y more like this
source http://en.wikipedia.org/wiki/Yttrium more like this
type
Resource
Concept
broader hree
narrower yttrium
in scheme commodity code
is primary topic of yttrium