Genetic and phenotypic parameters of egg production and some constituents of blood serum in Fayoumi layers A. OBEIDAH, H. M. MORAD, A. A. SAMI and A. MOSTAGEERGenet. Sel. Evol., 10 1 (1978) 47-60DOI: https://doi.org/10.1051/gse:19780105