Stromová štruktúra MeSH - hélium

[d01.268.613.350]

• chemikálie anorganické [d01] +
  • prvky [d01.268] +
    • plyny vzácne [d01.268.613] +
      • argón [d01.268.613.050]
      • hélium [d01.268.613.350]
      • kryptón [d01.268.613.425]
      • neón [d01.268.613.600]
      • radón [d01.268.613.700] +
      • xenón [d01.268.613.900] +

[d01.362.641.352]

• chemikálie anorganické [d01] +
  • plyny [d01.362] +
    • plyny vzácne [d01.362.641] +
      • argón [d01.362.641.113]
      • hélium [d01.362.641.352]
      • kryptón [d01.362.641.468]
      • neón [d01.362.641.592]
      • radón [d01.362.641.745] +
      • xenón [d01.362.641.918] +