Commodity Code

HREE

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

definition See more like this
narrower dysprosium
broader hree
erbium
broader hree
europium
broader hree
gadolinium
broader hree
holmium
broader hree
lutetium
broader hree
terbium
broader hree
thulium
broader hree
ytterbium
broader hree
yttrium
broader hree
notation
02.01.03.01 more like this
HREE more like this
source http://en.wikipedia.org/wiki/Rare_earth_element more like this
type
Resource
Concept
broader rare earth element
narrower hree
in scheme commodity code
is primary topic of hree