1. Onchocerciasis in Ghana Publication: [Bethesda, Md.] : National Cancer Institute ; [Atlanta : for loan by National Medical Audiovisual Center ; Washington : for sale by National Audiovisual Center, 1967] Subject(s): DDTInsect ControlInsect VectorsOnchocerciasis
2. Flies carry germs causing many diseases Publication: London : Proprietors of "The medical officer" by permission of the Dept. of Public Health, Queensland, [19--] Subject(s): Diptera -- pathogenicityInsect VectorsFood Contamination -- prevention & control