Nicolas, Rheyste M, and Elmer C Vingua. “OREGANO (Origanum Vulgare) SYRUP FOR TREATING RESPIRATORY DISEASES IN BROILERS”. The International Journal of Science, Technology and Engineering 2, no. 1 (December 20, 2018). Accessed April 3, 2025. https://ijste.psu.edu.ph/index.php/1/article/view/15.