ELWORTHY, R.T. - Helium in Canada

Canada: Mines Branch, 1926. First Edition. Paperback. 64 pages. Map inside back cover. Chapters include: Helium and its properties; Resources of Helium in other countries; The Investigation of Helium sources in Canada; The natural gas fields of Canada and Helium Content of Gases. Technology of Helium. Bibliography. Black and white photographic plates. Date stamp atop title page else unmarked with average wear. Binding intact. Sound copy.; 8vo - over 7¾" - 9¾" tall; Helium Canada Resources. Good .

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