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  1. By: Courtney,Peter A. - Blokpoel, Hans,
    Type: Article
    In: The Canadian field-naturalist
    Volume: 94
    Issue: 3
    Date: 1980
    Page Range: 336--338
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Blokpoel, Hans, - Struger, H.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 102
    Issue: 3
    Date: 1988
    Page Range: 430--433
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  3. By: Hofmann, Theo - Chardine, John W. - Blokpoel, Hans,
    Type: Article
    In: The Canadian field-naturalist
    Volume: 111
    Issue: 2
    Date: 1997
    Page Range: 308--309
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  4. By: Haymes, Gerard T - Blokpoel, Hans,
    Type: Article
    In: The Canadian field-naturalist
    Volume: 92
    Issue: 4
    Date: 1978
    Page Range: 392--395
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  5. By: Blokpoel, Hans,
    Type: Article
    In: The Canadian field-naturalist
    Volume: 90
    Issue: 2
    Date: 1976
    Page Range: 208--208
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  6. By: Haymes, Gerard T - Blokpoel, Hans,
    Type: Article
    In: The Wilson bulletin
    Volume: 92
    Issue: 2
    Date: 1980
    Page Range: 221--228
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  7. By: Houston, C Stuart - L'Arrivée, Louis P. - Blokpoel, Hans,
    Type: Article
    In: The Canadian field-naturalist
    Volume: 105
    Issue: 3
    Date: 1991
    Page Range: 416--416
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  8. By: Blokpoel, Hans, - Heyland, J. Douglas - Burton, J. - Samson, N.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 89
    Issue: 3
    Date: 1975
    Page Range: 268--277
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  9. By: Gauthier, Maureen C. - Blokpoel, Hans, - Curtis, Steven G
    Type: Article
    In: The Canadian field-naturalist
    Volume: 90
    Issue: 2
    Date: 1976
    Page Range: 196--199
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  10. By: Blokpoel, Hans,
    Type: Article
    In: The Canadian field-naturalist
    Volume: 88
    Issue: 1
    Date: 1974
    Page Range: 67--71
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  11. By: Blokpoel, Hans,
    Type: Article
    In: The Canadian field-naturalist
    Volume: 84
    Issue: 4
    Date: 1970
    Page Range: 394--396
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  12. By: L'Arrivée, Louis P. - Blokpoel, Hans,
    Type: Article
    In: The Canadian field-naturalist
    Volume: 104
    Issue: 4
    Date: 1990
    Page Range: 534--539
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  13. By: Blokpoel, Hans, - Hatch, David R. M
    Type: Article
    In: The Canadian field-naturalist
    Volume: 90
    Issue: 2
    Date: 1976
    Page Range: 195--195
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  14. By: Blokpoel, Hans, - Gauthier, Maureen C.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 94
    Issue: 3
    Date: 1980
    Page Range: 293--299
    Publication Info: Ottawa Ottawa Field-Naturalists' Club