LACKMAN, D B Serological characteristics of a pathogenic rickettsia occurring in Amblyomma maculatum. [electronic resource] - Public health reports (Washington, D.C. : 1896) Oct 1949 - 1342-9 p. digital Publication Type: Journal Article ISSN: 0094-6214 Subjects--Topical Terms: AnimalsHumansIxodidaeRickettsia