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Symposium on Assessing the Safety and Efficacy of Vaccines to Regulate Fertility (1989: Geneva) ,  Ada, Gordon L ,  Griffin, P. David ,  WHO Special Programme of Research, Development and Research Training in Human Reproduction ,  [Vaccines for fertility regulation : the assessment of their safety and efficacy : proceedings of a Symposium on Assessing the Safety and Efficacy of Vaccines to Regulate Fertility, Geneva, June 1989 / edited by G. L. Ada, P. D. Griffin]

Symposium on Assessing the Safety and Efficacy of Vaccines to Regulate Fertility (1989: Geneva) ,  Ada, Gordon L ,  Griffin, P. David ,  WHO Special Programme of Research, Development and Research Training in Human Reproduction ,  [Vaccines for fertility regulation : the assessment of their safety and efficacy : proceedings of a Symposium on Assessing the Safety and Efficacy of Vaccines to Regulate Fertility, Geneva, June 1989 / edited by G. L. Ada, P. D. Griffin]