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The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1946)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1978)

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Congrès international d'entomologie : [proceedings] (Hayez, 1933)

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Congrès international d'entomologie : [proceedings] (Hayez, 1939)

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Congrès international d'entomologie : [proceedings] (Hayez, 1958)

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Congrès international d'entomologie : [proceedings] (Hayez, 1984)

Congrès international d'entomologie : [proceedings] (Hayez, 1988)

Congrès international d'entomologie : [proceedings] (Hayez, 1992)

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