T. Jerjees , M., A. Ali , D. and M. Al-Saquar ‎, I. (1987) “THE EFFECT OF SUB-CLINICAL INFECTION WITH HAEMONCHUS CONTORTUS ON PRODUCTION PERFORMANCE IN THE ‎PREGNANT EWES”, The Iraqi Journal of Veterinary Medicine, 11(1), pp. 248–260. doi:10.30539/a2xkmq16.