title: Long-term controlled field experiment on the competition between two species of Biomphalaria (Mollusca, Basommatophora), the snail vectors of Schistosoma mansoni in Northeastern Brazil.
authors.affiliation: Centro de Pesquisas Aggeu Magalhães, Fundação Oswaldo Cruz, Campus da Universidade Federal de Pernambuco, Recife, PE, Brasil.
authors.forename: C S
authors.initials: CS
authors.lastname: Barbosa
authors.forename: F S
authors.initials: FS
authors.lastname: Barbosa
authors.forename: F
authors.initials: F
authors.lastname: Arruda