1. A.M. Abdalla, and G.A. El-Zorgani (1988 ) Behaviour of14C-DDT in Sudan Gezira soil. Report of the final research coordination meeting on the fate of persistant pesticides in the tropics using isotope techniques. International Atomic Energy Agency, Vienna, IAEA-TECDOC-476.
2. C.Y. Asinas, A.B. Alvarez, N.DC Joson, B.M. Rosario, L.I. Ortega, and J. Awat . (unpubl. a) The effectiveness of etofenprox 20% WP (Trebon) insecticide compared to DDT 75% WP against the primary vector in the Philippines. Unpublished document. Malaria Control Service, The Philippines.