Usman, Salim and Soekirno, M. and Seregeg, I.G. and Supraptini, Supraptini and Suwarni, Suwarni and Suwandi, Suwandi (1975) 108. WHO Vector and Rodent Control Research Unit Jakarta, Indonesia : Progress Report For September And October 1975 (Laporan Penelitian). Project Report. Pusat Penelitian Ekologi Kesehatan, Jakarta. (Unpublished)