(1)
Martin Polo, J.; Valle Gutierrez, C.; Blanco de Pablos, A.; Sánchez Rodríguez, M. Forages Resources in "dehesa" System: Fertilization, Tillage and Forage Sowing. I. Influence to the Environment (soil and Vegetation). Span. j. agric. res. 2003, 1, 23-33.