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      <marc:subfield code="a">An updated compilation of radiocarbon dates relating to the age of sensitive-clay landslides in the Ottawa Valley, Ontario–Quebec / </marc:subfield>
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      <marc:subfield code="a">"This Open File is an updated compilation of 167 published and unpublished radiocarbon dates relating directly or indirectly to the ages of 45 landslides or landslide complexes in sensitive clay, and three “disturbed terrain” features in the Ottawa Valley, southeastern Ontario/southwestern Quebec"--Abstract, page 1.</marc:subfield>
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