1. Mabbett, T. 1991. Pest management in rice. Far Eastern Agric. January/February: 9.
2. Bunton, J. 1991. Pesticides to avert hunger. Far Eastern Agric. January/February: 8-10.
3. Crop Protection Association of the Philippines. 1993. Sales statistics. Manila, Philippines.
4. Trends in pesticide usage in Bangladesh;Rahman;Sci. Total Environ.,1995