1. Profitable beef production;Cooper,1979
2. Hormonal control of sex ratios;James;J Theor Biol,1986
3. Decennial supplement 1931, part II B, occupational fertility, 1931 and 1939;Registrar General,1953
4. Occupational reproductive epidemiology: studies on medical and population subjects, 50;Opcs,1985
5. Sex ratio of offspring of patients with prostatic cancer;Hill;Can Med Assoc J,1985