Proceedings of the National IRPA (Intensification of Research in Priority Areas) Seminar (Agricultural Sector): Kuala Lumpur (Malaysia), 6-11 Jan 1992, p. 225-226
Proceedings of the National IRPA (Intensification of Research in Priority Areas) Seminar (Agricultural Sector): Kuala Lumpur (Malaysia), 6-11 Jan 1992, p. 223-224