Class: PlanetaryNebulaShell

•owl:Thing
        •AstrObject
                •DiffuseMatter
                        •Nebula
                                •PlanetaryNebulaShell

Super Classes

isConstituentOf SOME PlanetaryNebula

Equivalent Classes (Necessary and Sufficient Conditions)

isComponentOf SOME PlanetaryNebula
Nebula

Usage

Class Description/Definition (Necessary Conditions)

PlanetaryNebula, PlanetaryNebulaShell
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