1. Crossing and egg production;Al-Rawi,1977
2. Effectiveness of egg mass/feed consumption ratio in improving genetic productive efficiency of laying hens;Harris;Poultry Sci.,1969
3. Some environmental and physiological factors that influence egg production in the subtropics;Kamar;The Phillipine J. Anim. Ind.,1962
4. Proposed measure of performance efficiency in laying hens;Morgan;Poultry Sci.,1968
5. Selection for egg mass in different social environments 1. Estimation of some parameters in the foundation stock;Quadeer;Poultry Sci.,1977