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      <marc:subfield code="a">Killeen, P. G. </marc:subfield>
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      <marc:subfield code="a">Radioactive disequilibrium determinations.</marc:subfield>
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      <marc:subfield code="a">Digitized edition from print [produced by Natural Resources Canada].</marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references.</marc:subfield>
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      <marc:subfield code="a">pt. 1. Determination of radioactive disequilibrium in uranium ores by alpha-spectrometry / P.G. Killeen, C.M. Carmichael -- pt. 2. Radioactive disequilibrium investigations, Elliot Lake area, Ontario / L. Ostrihansky.</marc:subfield>
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      <marc:subfield code="a">Includes abstracts in English and French.</marc:subfield>
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      <marc:subfield code="a">Uranium-thorium dating.</marc:subfield>
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      <marc:subfield code="a">Alpha ray spectrometry.</marc:subfield>
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      <marc:subfield code="a">Gamma ray spectrometry.</marc:subfield>
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      <marc:subfield code="a">Uranium</marc:subfield>
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      <marc:subfield code="a">Spectrométrie alpha.</marc:subfield>
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      <marc:subfield code="a">Geological Survey of Canada, </marc:subfield>
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      <marc:subfield code="a">Paper (Geological Survey of Canada)</marc:subfield>
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      <marc:subfield code="q">PDF</marc:subfield>
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      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2025/rncan-nrcan/M44-75-38-eng.pdf</marc:subfield>
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