helium
type: Concept
created: 1985-01-01
modified: 2016-05-23T16:12:14+03:00
broader: jalokaasut
broader: epämetallit
broader: alkuaineet
in scheme: ysa

epämetallit
type: Concept
narrower: helium

jalokaasut
type: Concept
narrower: helium

alkuaineet
type: Concept
narrower: helium

09 Kemia
type: Collection
member: helium