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    <marc:controlfield tag="008">150525s1974    xxca   |o    f000 0 eng d</marc:controlfield>
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      <marc:subfield code="a">Lapp, H. M.</marc:subfield>
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      <marc:subfield code="a">Methane gas production from animal wastes </marc:subfield>
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      <marc:subfield code="c">H.M. Lapp, D.D. Schulte, L.C. Buchanan.</marc:subfield>
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      <marc:subfield code="a">Ottawa :</marc:subfield>
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      <marc:subfield code="c">1974.</marc:subfield>
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      <marc:subfield code="a">Historical publication digitized by Agriculture and Agri-Food Canada.</marc:subfield>
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      <marc:subfield code="a">Issued also in French under title: La production de méthane à partir des déchets animaux.</marc:subfield>
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      <marc:subfield code="a">“A federal/provincial publication—Canada/Manitoba”— p. [2].</marc:subfield>
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      <marc:subfield code="a">“This publication was originally produced by the Agricultural Engineering Department, University of Manitoba” —p. [2].</marc:subfield>
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      <marc:subfield code="a">Schulte, D. D.</marc:subfield>
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      <marc:subfield code="t">La production de méthane à partir des déchets animaux </marc:subfield>
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      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2015/aac-aafc/A43-1528-1974-eng.pdf  </marc:subfield>
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      <marc:subfield code="a">Publication 1528</marc:subfield>
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