BARACHO, MARTHA O., Y. B. TOLON, I. A. NÄÄS, and M. ROJAS. 2008. “ AERIAL AND ACOUSTIC ENVIRONMENT IN SWINE NURSERY AND FINISHING HOUSING”. Brazilian Journal of Biosystems Engineering 2 (3). Tup:201-12. https://doi.org/10.18011/bioeng2008v2n3p201-212.