Publisher
Springer Berlin Heidelberg
Reference48 articles.
1. Alza Corporation (1977) The progestasert. Intrauterine progesterone contraceptive system release 651.tg/day progesterone for one year. Alza Product Information, Palo Alto
2. Billings EL, Billings JJ, Brown JB, Burger HG (1972) Hormonal changes accompanying ovulation. Lancet 1: 282–284
3. Billings EL, Westmore A (1981) The Billings method: Controlling fertility without drugs or devices. Allen Lane, London
4. Boehringer Information (1984) Boehringer Diagnostica
5. Bustos-Obregon E, Courot M, Flechon JE, Hochereau-de-Reviers MT, Holstein AF (1975) Morphological appraisal of gametogenesis. Spermatogenic process in mammals with particular reference to man. Andrologia 7: 141–163