de Oliveira, Nelson Roberto Manzoni, and John P. Kennedy. 1992. “Implications of Medullation and Fibre Diameter Distribution on Wool Diameter Measured by Airflow”. Pesquisa Agropecuaria Brasileira 27 (12):1643-57. https://doi.org/10.1590/S1678-3921.pab1992.v27.3814.