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Contributor Information
V. St. E. D'Abrera, Division of Medical Entomology, Department of Medical and Sanitary Services, Ceylon
K. G. Stork, Institute of Bacteriology, Department of Medical and Sanitary Services, Ceylon



V. St. E. D'Abrera, Division of Medical Entomology, Department of Medical and Sanitary Services, Ceylon
K. G. Stork, Institute of Bacteriology, Department of Medical and Sanitary Services, Ceylon