@ARTICLE {HULUGALLE:1990b, title = {Effect of rock bunds and tied ridges on soil water content and soil properties in the Sudan savannah of Burkina Faso}, author = {Hulugalle, N. and De Koning, J. and Matlon, P. J. }, journal = {Tropical Agriculture}, year = {1990}, volume = {67}, number = {2}, pages = {149--153}, }