1. Frequency of using bulls for service and distribution of calving in the Egyptian buffalo;Asker;Alexandria J. Agric. Res.,1958
2. The determination of semen fructose;Barakat;Microchem. J.,1964
3. Rapid methods for estimating the quality of bull semen;Beck;J. Dairy Sci.,1943
4. The influence of one kilogram artificially dried grass in the daily ration on the libido and semen characters of bulls;De Groote;Land bouwk Tijdschr.,1958
5. Studies on semen characteristics in young native bulls;ElSawaf;Vet. Med. J.,1965