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      <marc:subfield code="a">Beltaos, S., </marc:subfield>
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      <marc:subfield code="a">Configuration and properties of a breakup jam / </marc:subfield>
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      <marc:subfield code="a">Burlington, Ontario, Canada : </marc:subfield>
      <marc:subfield code="b">National Water Research Institute, Canada Centre for Inland Waters, River Research Branch, Water Quantity Modelling and Monitoring, </marc:subfield>
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      <marc:subfield code="a">"RRB-87-17"--Cover.</marc:subfield>
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      <marc:subfield code="a">"This report has been submitted to the Canadian Journal of Civil Engineering for publication"--Cover.</marc:subfield>
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      <marc:subfield code="a">"Favourable weather conditions in January, 1986 resulted in a breakup jam on the Thames River that froze in place. This afforded safe access and performance of detailed thickness measurements that, normally, are not possible to obtain. The thickness of the jam is highly variable in the lateral direction but without consistent trends which, in a crude sense, justifies the assumption of lateral uniformity made for analytical purposes"--Abstract, page 2.</marc:subfield>
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      <marc:subfield code="a">Includes a management perspective and an abstract in English and French.</marc:subfield>
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      <marc:subfield code="a">National Water Research Institute (Canada). </marc:subfield>
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