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      <marc:subfield code="a">Nelms, G.L., </marc:subfield>
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      <marc:subfield code="a">The high latitude ionosphere : </marc:subfield>
      <marc:subfield code="b">results from the Alouette/ISIS topside sounders / </marc:subfield>
      <marc:subfield code="c">by G.L. Nelms and J.H. Chapman.</marc:subfield>
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      <marc:subfield code="a">Ottawa, Canada : </marc:subfield>
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      <marc:subfield code="c">[1969]</marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references (pages [45-53]).</marc:subfield>
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      <marc:subfield code="a">"The major structures of the high latitude topside ionosphere and some of their causal processes are reviewed. Emphasis is given to the relationship between plasma flow in the magnetosphere and the structure of the high latitude ionosphere"--Abstract.</marc:subfield>
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      <marc:subfield code="a">Ionosphere</marc:subfield>
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      <marc:subfield code="a">Magnetosphere.</marc:subfield>
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      <marc:subfield code="a">Ionosphère</marc:subfield>
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      <marc:subfield code="a">Magnétosphère.</marc:subfield>
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      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2023/isde-ised/Co24-624-1969-eng.pdf</marc:subfield>
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