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      <marc:subfield code="a">Sun, S. </marc:subfield>
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      <marc:subfield code="a">Porosity and permeability variations in the Silurian Lockport Group and A-1 Carbonate Unit, southwestern Ontario / </marc:subfield>
      <marc:subfield code="c">S. Sun, F.R. Brunton, T.R. Carter, J.R. Clarke, H.A.J. Russell, K. Yeung, A. Cachunjua, and J. Jin.</marc:subfield>
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      <marc:subfield code="c">©2023</marc:subfield>
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