1. Semi-detailed soil survey;Agricultural Projects Services Center,1986
2. Breeding for soil stresses;Akbar,1986
3. Wheat in the rice-wheat cropping system of the Punjab: a synthesis of on-farm research results 1984–1988;Aslam,1989
4. Land productivity constraints and development potentials: Ban Naphok, Vientiane Plain;Bruggeman;Paper of the Food and Agriculture Organization of the United Nations (FAO) Lands with Declining and Stagnating Productivity Project,1986
5. Maize On-Farm Research in the District of Malang;Dahlan,1987