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799. Neisser, M., u. ß. Lubowski, Lässt sich durch Einspritzung von 

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801. Nicol, B. A., On the Existence of Immunity of the Enteric Fever 

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802. Osler, W., Aplex for the more careful study of the Symptoms of Per- 

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803. Osler, W., On Perforation and perforative Peritonitis in typhoid 

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805. Paladiuo-Blaiidiiii, A., Ricerche sulle sostanze attive nelle tifo- 

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806. Paladiiio-Blandini, A., Ricerche nelle sostanze attive nelle tifo- 

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807. Park, W. H., A few experiments upon the effect of low tempera- 

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808. Park, W. H., Duration of life of typhoid bacilli, derived from twenty 

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809. Parkes, C, and S. Rideal, A suggested method of preventing 

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