004540000a2200109000450024501740000004100130017470000250018770000220021270000220023410000220025677300660027810aMorphological and polymerase chain reaction - restriction fragment lenght polymorphism characterization of Biomphalaria kuhniana and Biomphalaria amazonica from Colombia0 aInglés1 aCaldeira, Roberta L.1 aEstrada, Victoria1 aCarvalho, Omar S.1 aVelasquez, Luz E.1 tMem. Inst. Oswaldo Cruz, Río Janeiroh7q997-1004d2002g97