1. Evidence from nuclear sexing relating to the primary sex-ratio in man;Stevenson,1961
2. Sex chromatin and the sex ratio in man;Stevenson,1966
3. Immunological aspects of human reproduction, WHO Report of a WHO scientific group;W.H.O.;W.H.O. Tech. Rep. Ser.,1966
4. Principles of Human Genetics;Stern,1973
5. Embryonal sex ratios in animals and man;Keller,1969