“Monthly Changes in the Rate and Severity of Intrusive Perforated in Dactylogyrus on Common Carp Fish Cyprinus Carpio Live Stock in One of the Floating Cages in Alforat River at Al-Mussaib, Babylon, Iraq”. JOURNAL OF UNIVERSITY OF BABYLON for Pure and Applied Sciences, vol. 29, no. 2, Aug. 2021, pp. 258-66, https://journalofbabylon.com/index.php/JUBPAS/article/view/3804.