Report on some sources of helium in the British empire, by J. C. McLennan and associates. Pub. by permission of the British Admiralty.

By: Material type: TextTextPublication details: Ottawa, J. de L. Taché, printer, 1920.Description: viii, 72 p. 4 fold. maps (in pocket) 25 cmSubject(s): LOC classification:
  • TN26 .A35 no. 31
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At head of title: Canada. Department of mines.

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