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activities adults algae Anopheles Anopheles quadrimaculatus anopheline anti-malaria aquatic August average Behbehan blood breeding Bushehr cent collected commodities control of malaria cost Culex DDT residual spraying DeBreb desmid-poor desmid-rich desmids dieldrin disease distribution eggs endemic entomological entomologist epidemiology equipment Federal Security Agency females Field Units gallon gamma BHC Gammexane Gorgan habitats houses impounded infection insecticides Iran Iranian July larvae larviciding maculipennis group Malaria Control Division malaria control program Malaria Control Project malaria eradication malaria transmission malariologist malarious areas Maragheh measures method Mindoro minimus flavirostris mosquito November observations operations Organization parasites paris green period personnel pesos Plan pond population procurement Public Health Service rates reported reservoir sacharovi screen season September Sharaf Khaneh shelters six-year species spleen sprayers station stream superpictus surface surveys Tala technical Tehran tion treatment Varamin vector villages water level water-wettable writer