Long, H. M. author A New Type of Helium Liquefier / by H. M. Long and F. E. Simon.

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Long, H. M. author

A New Type of Helium Liquefier / by H. M. Long and F. E. Simon.

Low temperatures.

Gases, -- Liquefaction.

Simon, F. E. (Francis Eugene), 1893-1956, author.

Applied Scientific Research.