1. Othmer K (1996) Encyclopedia of chemical technology. Wiley, New York
2. Mellanby K (1992) The DDT story. The British Crop Protection Council, London
3. Carson RL (1962) Silent spring. The Riverside press Cambridge, USA
4. Drum C (1980) Soil Chemistry of pesticides. PPG Industries Inc., Pittsburgh
5. Buchel KH (1983) Chemistry of pesticides. Wiley, New York, NY