Identification of enteropathogens from buffalo calves with and without diarrhoea in the Ribeira Valley, State of São Paulo, Brazil - Ribeiro, Márcio Garcia; Langoni, Hélio; Jerez, José Antonio; Leite, Domingos da Silva; Ferreira, Fernando; Solange Maria, Gennari (Brazilian Journal of Veterinary Research and Animal Science, 2000)