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Vidigal T.H.D.A., Caldeira R.L., Simpson A.J.G., Carvalho O.S. (2001). Identification of Biomphalaria havanensis and Biomphalaria obstructa populations from Cuba using polymerase chain reaction and restriction fragment length polymorphism of the ribosomal RNA intergenic spacer. Mem Inst Oswaldo Cruz. 96(5):661-665.
Vidigal T.H.D.A., Caldeira R.L., Simpson A.J.G., Carvalho O.S. (2001). Identification of Biomphalaria havanensis and Biomphalaria obstructa populations from Cuba using polymerase chain reaction and restriction fragment length polymorphism of the ribosomal RNA intergenic spacer. Mem Inst Oswaldo Cruz. 96(5):661-665.
