Beloti, V.; Muller, E. E.; Megid, J.; Rocha, L. C.; Mettifogo, E.; Freitas, J. C. de. Occurence and Caracterization of Coagulase - Negative Staphylococci from Subclinical Mastitis in Dairy Cattle, Paraná, Brazil. Semina: Ciênc. Agrár. 1991, 12, 49-52.