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      <marc:subfield code="a">Principal mineral areas, producing mines, and oil and gas fields in Canada = </marc:subfield>
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      <marc:subfield code="a">Principales régions minières, principales mines productrices et principaux champs de pétrole et de gaz du Canada</marc:subfield>
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      <marc:subfield code="a">Seventy-second edition, 2022.</marc:subfield>
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      <marc:subfield code="a">Scale: 1:6,000,000 ; </marc:subfield>
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      <marc:subfield code="a">[Ottawa] : </marc:subfield>
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      <marc:subfield code="c">©2023</marc:subfield>
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      <marc:subfield code="a">1 online resource (1 map) : </marc:subfield>
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      <marc:subfield code="a">["A" series map] ; </marc:subfield>
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      <marc:subfield code="a">Issued also in French under title: Principales régions minières, principales mines productrices et principaux champs de pétrole et de gaz du Canada = Principal mineral areas, producing mines, and oil and gas fields in Canada.</marc:subfield>
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      <marc:subfield code="a">"Map production coordinated by D. Dupont ..."</marc:subfield>
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      <marc:subfield code="a">"Cartography by D. Viner ..."</marc:subfield>
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      <marc:subfield code="a">"Geological Survey of Canada map 900A."</marc:subfield>
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      <marc:subfield code="a">"This map, published annually by Natural Resources Canada, provides the geographic locations of principal producing metallic, nonmetallic, and industrial mineral mines, oil sands mines, and oil and gas fields for the provinces and territories of Canada. It also contains information on existing and proposed oil and gas pipelines. A mine index lists, for each mine identified on the map, information on company ownership and the mine's type, location, and principal minerals and metals produced. A similar index (without company names due to a shortage of space) is provided for each oil and gas field. Three inset maps detail the geographic locations of selected metallurgical works, and current and expected mine openings and closings. Mineral production statistics have also been incorporated in a number of tables and charts on the map"--Provided by publisher.</marc:subfield>
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      <marc:subfield code="a">Mines and mineral resources</marc:subfield>
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      <marc:subfield code="v">Maps.</marc:subfield>
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      <marc:subfield code="a">Oil fields</marc:subfield>
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      <marc:subfield code="v">Maps.</marc:subfield>
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      <marc:subfield code="a">Mineral industries</marc:subfield>
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      <marc:subfield code="e">author.</marc:subfield>
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      <marc:subfield code="a">Canada. </marc:subfield>
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      <marc:subfield code="a">Geological Survey of Canada, </marc:subfield>
      <marc:subfield code="e">issuing body.</marc:subfield>
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      <marc:subfield code="t">Principales régions minières, principales mines productrices et principaux champs de pétrole et de gaz du Canada = </marc:subfield>
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      <marc:subfield code="t">Principal mineral areas, producing mines, and oil and gas fields in Canada = </marc:subfield>
      <marc:subfield code="b">Seventy-third edition, 2023</marc:subfield>
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      <marc:subfield code="t">Principal mineral areas, producing mines, and oil and gas fields in Canada = </marc:subfield>
      <marc:subfield code="b">Seventy-first edition, 2021</marc:subfield>
      <marc:subfield code="w">(CaOODSP)9.913772</marc:subfield>
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      <marc:subfield code="a">"A" series map (Geological Survey of Canada)</marc:subfield>
      <marc:subfield code="v">900A.</marc:subfield>
      <marc:subfield code="w">(CaOODSP)9.507196</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_2023/rncan-nrcan/M48-900A-2022-eng.pdf</marc:subfield>
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      <marc:subfield code="q">HTML</marc:subfield>
      <marc:subfield code="s">N/A</marc:subfield>
      <marc:subfield code="u">https://doi.org/10.4095/331366</marc:subfield>
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