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By: Ryder, John P.Type: ArticleIn: The Canadian field-naturalistVolume: 79Series:Issue: 2Date: 1965Page Range: 155--155Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Ryder, John P.Type: ArticleIn: The Canadian field-naturalistVolume: 85Series:Issue: 2Date: 1971Page Range: 181--183Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Ryder, John P.Type: ArticleIn: The Canadian field-naturalistVolume: 88Series:Issue: 3Date: 1974Page Range: 349--352Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Ryder, John P.Type: ArticleIn: The Canadian field-naturalistVolume: 90Series:Issue: 4Date: 1976Page Range: 505--506Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Ryder, John P. - Carroll, Timothy R.Type: ArticleIn: The Canadian field-naturalistVolume: 92Series:Issue: 1Date: 1978Page Range: 51--54Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Ryder, John P. - Ankney, C DavisonType: ArticleIn: The Wilson bulletinVolume: 91Series:Issue: 1Date: 1979Page Range: 157--159Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-Subjects:
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By: Ryder, John P. - Boag, David A. (David Archibald),Type: ArticleIn: The Canadian field-naturalistVolume: 95Series:Issue: 1Date: 1981Page Range: 35--38Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects:
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By: Ryder, John P.Type: ArticleIn: The Canadian field-naturalistVolume: 98Series:Issue: 2Date: 1984Page Range: 266--267Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects: