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      <marc:subfield code="a">Beattie, Kathleen G‏., </marc:subfield>
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      <marc:subfield code="a">The agricultural use of marginal lands :  </marc:subfield>
      <marc:subfield code="b">a review and bibliography / </marc:subfield>
      <marc:subfield code="c">Kathleen G. Beattie, Wayne K. Bond and Edward W. Manning.</marc:subfield>
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      <marc:subfield code="a">Digitized edition from print [produced by Environment and Climate Change Canada].</marc:subfield>
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      <marc:subfield code="a">Issued also in French under title: L'utilisation agricole des terres marginales : une retrospective et une bibliographie.</marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references.</marc:subfield>
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      <marc:subfield code="a">"The agricultural use of Canada's land varies greatly from region to region in its intensity, vitality and economic prospects. Over time, the agricultural frontier advances in some regions, retreats from others. This paper reviews the Canadian experience along the agricultural margins. A comprehensive review of the Canadian literature is undertaken"--Abstract.</marc:subfield>
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      <marc:subfield code="a">Bond, Wayne K., </marc:subfield>
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      <marc:subfield code="a">Manning, E. W. </marc:subfield>
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      <marc:subfield code="a">Canada. </marc:subfield>
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      <marc:subfield code="a">Canada. </marc:subfield>
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      <marc:subfield code="t">L'utilisation agricole des terres marginales :  </marc:subfield>
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      <marc:subfield code="a">Working paper (Canada. Lands Directorate)</marc:subfield>
      <marc:subfield code="v">no 13.</marc:subfield>
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      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2019/eccc/en73-4/En73-4-13-eng.pdf</marc:subfield>
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