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By: Mathews, F. Schuyler (Ferdinand Schuyler), - Ussher, R. D.Edition: Rev. and enl. ed.Publication info: New York, G.P. Putnam's Sons, c1921Volume:Series:Holding Institution: University of Toronto - Gerstein Science Information CentreSubjects:BHL Collections:
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By: Ussher, R. D.Type: ArticleIn: The Canadian field-naturalistVolume: 53Series:Issue: 7Date: 1939-10Page Range: 101--110Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Ussher, R. D.Type: ArticleIn: The Canadian field-naturalistVolume: 54Series:Issue: 5Date: 1940-05Page Range: 75--75Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Ussher, R. D.Type: ArticleIn: The Canadian field-naturalistVolume: 54Series:Issue: 5Date: 1940-05Page Range: 74--75Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Ussher, R. D. - Cook, Francis R.Type: ArticleIn: The Canadian field-naturalistVolume: 93Series:Issue: 3Date: 1979Page Range: 321--323Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Ussher, R. D.Type: ArticleIn: The Canadian field-naturalistVolume: 49Series:Issue: 8Date: 1935-11Page Range: 140--140Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Ussher, R. D.Type: ArticleIn: The Canadian field-naturalistVolume: 51Series:Issue: 2Date: 1937-02Page Range: 30--30Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Ussher, R. D.Type: ArticleIn: The Canadian field-naturalistVolume: 50Series:Issue: 1Date: 1936-01Page Range: 14--14Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Ussher, R. D.Type: ArticleIn: The Canadian field-naturalistVolume: 45Series:Issue: 3Date: 1931-03Page Range: 71--71Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects: