Occurrence and maturation of Rhabdochona gnedini (Nematoda: Rhabdochonidae) in the barbels of the Sousa River, PortugalA. Saraiva, P. Felisberto and C. CruzParasite, 9 1 (2002) 81-84DOI: https://doi.org/10.1051/parasite/200209181