Mitchell, R., & Barr, A. (1978). Immunisation of adults against diphtheria.
Chicago Style CitationMitchell, Ruthven, i Archibald Barr. Immunisation of Adults against Diphtheria. 1978.
Cita MLAMitchell, Ruthven, i Archibald Barr. Immunisation of Adults against Diphtheria. 1978.
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