TY - SER AU - Mores,N. AU - Piffer,I.A. AU - Oliveira,A. TI - Lesions induced in the nasal turbinates of 25 to 35 day-old-piglets challenged with Pasteurella multocida and/or Bordetella bronchiseptica KW - LEITAO KW - RINITE ATROFICA KW - LESAO ER -