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By: Williams, M. Y.Type: ArticleIn: The Canadian field-naturalistVolume: 36Series:Issue: 4Date: 1920-04Page Range: 61--66Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Williams, M. Y.Type: ArticleIn: The Canadian field-naturalistVolume: 47Series:Issue: 2Date: 1933-02Page Range: 23--31Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Williams, M. Y.Type: ArticleIn: The Ottawa naturalistVolume: 32Series:Issue: 2Date: 1918-05Page Range: 37--38Publication Info: Ottawa, Ottawa Field-Naturalists' Club,Subjects:
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By: Williams, M. Y.Type: ArticleIn: The Canadian field-naturalistVolume: 33Series:Issue: 2Date: 1919-05Page Range: 40--41Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Williams, M. Y. - Spencer, G. J.Type: ArticleIn: The Canadian field-naturalistVolume: 56Series:Issue: 8-9Date: 1942-12Page Range: 138--138Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Williams, M. Y.Type: ArticleIn: The Canadian field-naturalistVolume: 33Series:Issue: 1Date: 1919-04Page Range: 10--11Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Williams, M. Y.Type: ArticleIn: The Canadian field-naturalistVolume: 56Series:Issue: 4Date: 1942-04Page Range: 60--62Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Williams, M. Y.Type: ArticleIn: The Canadian field-naturalistVolume: 56Series:Issue: 5Date: 1942-05Page Range: 70--81Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Williams, M. Y.Type: ArticleIn: The Canadian field-naturalistVolume: 56Series:Issue: 6Date: 1942-09Page Range: 92--94Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Williams, M. Y.Type: ArticleIn: The Canadian field-naturalistVolume: 35Series:Issue: 5Date: 1921-05Page Range: 94--98Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Williams, M. Y.Type: ArticleIn: The Canadian field-naturalistVolume: 34Series:Issue: 7Date: 1920-10Page Range: 121--126Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Williams, M. Y.Type: ArticleIn: The Ottawa naturalistVolume: 29Series:Issue: 8Date: 1915-11Page Range: 89--90Publication Info: Ottawa, Ottawa Field-Naturalists' Club,Subjects:
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By: Williams, M. Y.Type: ArticleIn: The Canadian field-naturalistVolume: 39Series:Issue: 4Date: 1925-04Page Range: 69--72Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Williams, M. Y.Type: ArticleIn: The Canadian field-naturalistVolume: 60Series:Issue: 3Date: 1946Page Range: 47--60Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects: