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  1. By: Ricker, William Edwin. - Clarke, C. H. D. (Charles Henry Douglas), - Royal Ontario Museum of Zoology.
    Publication info: [Toronto, Royal Ontario Museum], 1939
    Holding Institution: University of Toronto - Royal Ontario Museum Library & Archives
  1. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 51
    Issue: 7
    Date: 1937-10
    Page Range: 99--99
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 52
    Issue: 8
    Date: 1938-11
    Page Range: 125--126
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  3. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 53
    Issue: 6
    Date: 1939-09
    Page Range: 94--94
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  4. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 54
    Issue: 5
    Date: 1940-05
    Page Range: 76--76
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  5. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 55
    Issue: 4
    Date: 1941-03
    Page Range: 62--62
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  6. By: Clarke, C. H. D. (Charles Henry Douglas), - McTaggart-Cowan, Ian,
    Type: Article
    In: The Canadian field-naturalist
    Volume: 59
    Issue: 3
    Date: 1945
    Page Range: 83--103
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  7. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 54
    Issue: 4
    Date: 1940-04
    Page Range: 62--62
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  8. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 54
    Issue: 4
    Date: 1940-04
    Page Range: 62--62
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  9. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 55
    Issue: 3
    Date: 1941-03
    Page Range: 45--45
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  10. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 56
    Issue: 3
    Date: 1942-03
    Page Range: 45--45
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  11. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 54
    Issue: 5
    Date: 1940-05
    Page Range: 76--77
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  12. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 58
    Issue: 6
    Date: 1944
    Page Range: 194--194
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  13. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 53
    Issue: 6
    Date: 1939-09
    Page Range: 92--93
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  14. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 57
    Issue: 4-5
    Date: 1943
    Page Range: 91--91
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  15. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 53
    Issue: 8
    Date: 1939-11
    Page Range: 125--125
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  16. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 58
    Issue: 3
    Date: 1944
    Page Range: 82--84
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  17. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 53
    Issue: 9
    Date: 1939-12
    Page Range: 133--134
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  18. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 54
    Issue: 5
    Date: 1940-05
    Page Range: 76--76
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  19. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 55
    Issue: 6
    Date: 1941-09
    Page Range: 89--89
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  20. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 56
    Issue: 8-9
    Date: 1942-12
    Page Range: 127--128
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  21. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 53
    Issue: 4
    Date: 1939-04
    Page Range: 60--60
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  22. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 53
    Issue: 4
    Date: 1939-04
    Page Range: 62--62
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  23. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 55
    Issue: 6
    Date: 1941-09
    Page Range: 89--90
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  24. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 54
    Issue: 7
    Date: 1940-10
    Page Range: 110--110
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  25. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 54
    Issue: 7
    Date: 1940-10
    Page Range: 110--110
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  26. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 53
    Issue: 4
    Date: 1939-04
    Page Range: 62--62
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  27. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 50
    Issue: 4
    Date: 1936-04
    Page Range: 67--68
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  28. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 55
    Issue: 1
    Date: 1941-01
    Page Range: 12--12
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  29. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 54
    Issue: 5
    Date: 1940-05
    Page Range: 76--76
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  30. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 53
    Issue: 4
    Date: 1939-04
    Page Range: 61--62
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  31. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 50
    Issue: 4
    Date: 1936-04
    Page Range: 67--67
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  32. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 58
    Issue: 3
    Date: 1944
    Page Range: 97--103
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  33. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 55
    Issue: 9
    Date: 1941-12
    Page Range: 141--141
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  34. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 53
    Issue: 4
    Date: 1939-04
    Page Range: 61--61
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  35. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 58
    Issue: 4
    Date: 1944
    Page Range: 142--142
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  36. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 53
    Issue: 4
    Date: 1939-04
    Page Range: 61--61
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  37. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 53
    Issue: 9
    Date: 1939-12
    Page Range: 133--133
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  38. By: Ricker, William Edwin. - Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 55
    Issue: 9
    Date: 1941-12
    Page Range: 137--138
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  39. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 79
    Issue: 1
    Date: 1965
    Page Range: 1--3
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  40. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 53
    Issue: 8
    Date: 1939-11
    Page Range: 122--123
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  41. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 53
    Issue: 6
    Date: 1939-09
    Page Range: 93--93
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  42. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 59
    Issue: 2
    Date: 1945
    Page Range: 65--65
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  43. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 62
    Issue: 1
    Date: 1948
    Page Range: 44--44
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  44. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 47
    Issue: 4
    Date: 1933-04
    Page Range: 73--74
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  45. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 53
    Issue: 3
    Date: 1939-03
    Page Range: 42--43
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  46. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 60
    Issue: 2
    Date: 1946
    Page Range: 34--34
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  47. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 53
    Issue: 8
    Date: 1939-11
    Page Range: 124--125
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  48. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 57
    Issue: 6
    Date: 1943-09
    Page Range: 112--112
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  49. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 53
    Issue: 9
    Date: 1939-12
    Page Range: 132--133
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  50. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 55
    Issue: 6
    Date: 1941-09
    Page Range: 89--89
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  51. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 49
    Issue: 8
    Date: 1935-11
    Page Range: 139--139
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  52. By: Clarke, C. H. D. (Charles Henry Douglas),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 81
    Issue: 3
    Date: 1967
    Page Range: 215--216
    Publication Info: Ottawa Ottawa Field-Naturalists' Club