HassanA. M., NasirM., AbdullahiA. Y., and ZangoM. H. “ POSTPARTUM CONCENTRATIONS OF ESTRADIOL AND PROGESTERONE IN THREE GENOTYPE OF SHEEP FED VARYING LEVELS OF PROTEIN”. FUDMA JOURNAL OF SCIENCES, Vol. 5, no. 1, June 2021, pp. 495 -01, doi:10.33003/fjs-2021-0501-595.