Parasite establishment and pathogenesis of haemonchus placei in immunised calves under different dietary protein - Gennari, Solange Maria; Abdalla, Adibe Luiz; Vitti, Dorinha Miriam Silber Schmidt; Meirelles, Cyro Ferreira; Lopes, R S; Bressan, M C R V (International Conference of the World Association for the Advancement of Veterinary Parasitology, 1993)