“Effect of Passive Smoking on the Number of Clara Cells in Respiratory Bronchiols of Domestic Rabbits Oryctolagus Cuniculus”. Rafidain Journal of Science 18, no. 6 (December 1, 2007): 168–181. Accessed August 16, 2026. https://rsci.uomosul.edu.iq/index.php/rsci/article/view/47316.