550,184 SPERMATOGENESIS Spermatogenesis - fertilization - contraception : molecular, cellular and endocrine events in male reproduction E[berhard] Nieschlag, U[rsula] F. Habe-nicht eds. ; S. Nieschlag ed. ass. - Berlin [etc]. : Springer-Veri. ,[1992] - XVI, 512 s. : il., wykr. ; 22 cm (Schering Foundation Workshop 4) ISBN 3-540-55436-X Springer-Veri. Berlin [etc.] ISBN 0-387-55436-X Springer-Veri. New York [etc.]