Perifocal spraying to control mosquito breeding in Asuncion, Paraguay Perifocal spraying to control mosquito breeding in Asuncion, Paraguay

Publication: Produced: [1930s] Language(s): No linguistic content Format: Still image Subject(s): Mosquito Control Paraguay Genre(s): Archival Materials Photographic prints Abstract: This photo shows a sanitation worker spraying insecticide on and around a water jug.. Perifocal treatment is defined on the back of the photograph as "spraying insecticide inside of a mosquito breeding focus and all-around its proximities or immediate surroundings." Copyright: This item may be under copyright protection; contact the copyright owner for permission before re-use. Extent: 1 pages NLM Unique ID: 101584650X13 (See in Profiles in Science) Profiles in Science ID: VVBBBQ Permanent Link: http://resource.nlm.nih.gov/101584650X13 Archival Collection: The Fred L. Soper Papers (Profiles in Science)