Molluscicidal effects of Piperaceae extracts on Biomphalaria glabrata (Mollusca, Planorbidae) - Teixeira, Edson; Navickiene, Hosana Maria Debonsi; Furlan, Maysa; Kato, Jorge Massuo; Nakano, Eliana; Kawano, Toshie (Simpósio Internacional sobre Esquistossomose, 2005)