Proceedings of the National IRPA (Intensification of Research in Priority Areas) Seminar (Agricultural Sector): Kuala Lumpur (Malaysia), 6-11 Jan 1992, p. 185-186
Proceedings of the National IRPA (Intensification of Research in Priority Areas) Seminar (Agricultural Sector): Kuala Lumpur (Malaysia), 6-11 Jan 1992, p. 183-184