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2. Epidemiology of the Hong Kong/68 Variant of Influenza A2 in Britain
3. The Antigenic Relationship of the Neuraminidase of Hong Kong Virus to that of Other Human Strains of influenza A Virus;Schulman J. L.;Bull. Wid Huh Org.,1969
4. Influenza Strains Isolated in Ontario;Zalan K;Canad. Med. Assoc. J.,1969