Composition and molluscicidal properties of essential oils from leaves of Xylopia langsdorffiana A. St. Hil. Et Tul. (Annonaceae) - Tavares, J F; Silva, M VB; Queiroga, K F; Martins, R M; Silva, T MS; Camara, C A; Agra, M F; Barbosa-Filho, J M; Da Silva, M S (J Essent Oil Res, 2007)