Helium resources of the United States, 1989 /

Lignende værker

• Isotopic purification of helium by differential distillation below the lambda-point /
  af: Tully, Philip C.
  Udgivet: (1975)
• An improved method for preparing gravimetric standard gas mixtures of helium-4 in nitrogen /
  af: Bibawy, Nabil A.
  Udgivet: (1990)
• A mass spectrometer method for determining helium in the parts-per-million to 10-percent range /
  af: Holland, Philip W.
  Udgivet: (1991)
• A course of experiments with He-Ne-laser /
  af: Sirohi, R. S.
  Udgivet: (1985)
• Gravimetric preparation of primary standard gas mixtures in the parts per trillion range
  af: Loya, Ernest W.
  Udgivet: (1982)