Spring diet composition of Rainbow Trout, Oncorhynchus mykiss (Walbaum, 1792) in the Urederra River (Spain)J. Oscoz, P. M. Leunda, F. Campos, M. C. Escala, C. García-Fresca and R. MirandaAnn. Limnol. - Int. J. Lim., 41 1 (2005) 27-34DOI: https://doi.org/10.1051/limn/2005003