Construction and maintenance of hand dug wells. Appendix L (1989) Water resources assessment and development project in the Sudan (WADS); Institute of Applied Geoscience; TNO; National Corporation for the Development of Rural Water Resources; NCDWR
Village water supply programme South Darfur. Appendix F (1989) Water resources assessment and development project in the Sudan (WADS); Institute of Applied Geoscience; TNO; National Corporation for the Development of Rural Water Resources; NCDWR
Modelstudy Gash Basin. Appendix E (1989) Water resources assessment and development project in the Sudan (WADS); Institute of Applied Geoscience; TNO; National Corporation for the Development of Rural Water Resources; NCDWR
Extension for village water supply. Appendix G (1989) Water resources assessment and development project in the Sudan (WADS); Institute of Applied Geoscience; TNO; National Corporation for the Development of Rural Water Resources; NCDWR