Bestemte typer glass
type: Concept
notation: 666.15
narrower: Optisk glass

Optisk glass
type: Concept
notation: 666.156
broader: Bestemte typer glass
created: 2010-02-04
in scheme: Norsk WebDewey
modified: 2014-05-20

Norsk WebDewey
type: ConceptScheme