Preliminary Report on the Effect of Savanna Plants <i>Leucaena leucocephala</i>, <i>Parkia platycephala</i> and <i>Senna alata</i> against Eggs and Immature Stages of Trichostrongy... oleh Benta Natânia Silva Figueiredo, Marcello Otake Sato, Laiane Teixeira Sousa Moura, Sandra Maria Botelho Mariano, Tarso da Costa Alvim, Ilsamar Mendes Soares, Satoru Kawai, Sergio Donizeti Ascêncio, Helcileia Dias Santos, Joseilson Alves Paiva, Megumi Sato, Viviane Mayumi Maruo