Improving the efficiency of rain water use on hillsides in the sub-humid tropics: Agricultural and environmental benefits of Quesungual system - Castro, A.; Rivera, M.; Ferreira, Oscar; Pavon, Jellin; García, E.; Amézquita Collazos, Edgar; Ayarza, Miguel Angel; Barrios, E.; Rondón, Marco Antonio; Pauli, N.; Baltodano, Maria Eugenia; Mendoza, B.; et al. (Stockholm International Water Institute, 2009)