TY  - GEN
AU  - Velasquez,Luz E.
AU  - Caldeira,Roberta L.
AU  - Estrada,Victoria
AU  - Carvalho,Omar S.
TI  - Morphological and polymerase chain reaction - restriction fragment lenght polymorphism characterization of Biomphalaria kuhniana and Biomphalaria amazonica from Colombia
ER  -