epämetallit
type: Concept
narrower: happi

happikato
type: Concept
related: happi

alkuaineet
type: Concept
narrower: happi

happi
type: Concept
created: 1985-01-01
modified: 2016-05-23T16:10:16+03:00
broader: epämetallit
broader: alkuaineet
in scheme: ysa
related: happikato
related: otsoni

otsoni
type: Concept
related: happi

09 Kemia
type: Collection
member: happi