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- helium abundance
- helium atom
- helium atomic spectrum
- helium bubble
- helium burning
- helium cadmium laser
- helium-cadmium laser
- helium content
- helium core
- helium detonation
- helium era
- Helium flash
- helium flash
- helium ion beam scanning electron microscope
- helium ionization detector
- helium ionization zone
- helium isotope hydrogeology
- helium-jet transport
- helium leak detector
- helium liquefier
- helium Lyman α forest
- helium main-sequence
- helium method
- helium-neon
- helium-neon laser