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- Advances in andrology : Freiburg, 20-22 March 1997 / edit. C. Keck, F. Geisthövel. 1997. Vol. 20, Suppl. 3 - Oxford : Blackwell Science, 1997 - 78 s.(International Journal of Andrology; Suppl. 3) [1, currently available 0, at library only 1]
- Chapters, articles