LIBRACH, I M A serological study of respiratory virus infections in an unselected group of patients. [electronic resource] - The British journal of clinical practice Aug 1962 - 544-8 p. digital Publication Type: Journal Article ISSN: 0007-0947 Subjects--Topical Terms: AlphaherpesvirinaeHerpesviridae InfectionsHumansRespiratory Tract InfectionsSerologic TestsVirus Diseases