1. Contraceptive Use in Australia*
2. A follow up survey of family planning methods in general practice in Victoria;Leeton J.;Aust. fam. Phycn,1980
3. Vasectomy follow up of 831 cases;Whitb R. M.;Med. J. Aust.,1973
4. Patterns of aggregate and individual changes in contraceptive practice, United States, 1965–1975;United States Department of Health, Education and Welfare;Vital and Health Statistics,1979