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  1. By: Clark, Thomas H.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 49
    Issue: 8
    Date: 1935-11
    Page Range: 141--142
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Clark, Thomas H.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 57
    Issue: 2-3
    Date: 1943
    Page Range: 47--48
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  3. By: Clark, Thomas H.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 41
    Issue: 3
    Date: 1927-03
    Page Range: 46--47
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  4. By: Clark, Thomas H.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 40
    Issue: 6
    Date: 1926-09
    Page Range: 136--137
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  5. By: Clark, Thomas H.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 37
    Issue: 7
    Date: 1923-10
    Page Range: 121--125
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  6. By: Clark, Thomas H.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 47
    Issue: 3
    Date: 1933-03
    Page Range: 60--61
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  7. By: Clark, Thomas H.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 42
    Issue: 8
    Date: 1928-11
    Page Range: 187--189
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  8. By: Clark, Thomas H.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 65
    Issue: 3
    Date: 1951
    Page Range: 112--113
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  9. By: Clark, Thomas H. - Blake, Donald A.W.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 66
    Issue: 5
    Date: 1952
    Page Range: 119--121
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  10. By: Clark, Thomas H.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 50
    Issue: 3
    Date: 1936-03
    Page Range: 31--33
    Publication Info: Ottawa Ottawa Field-Naturalists' Club