Haemonchus placei in calves: effects of dietary protein and multiple experimental infection on worm establishment and pathogenesis - Gennari, Solange Maria; Abdalla, Adibe Luiz; Vitti, Dorinha Miriam Silber Schmidt; Meirelles, Cyro Ferreira; Lopes, R S; Bressan, M C R V (Veterinary Parasitology, 1995)