SCHERING FOUNDATION WORKSHOP 4 550,184 SPERMATOGENESIS Spermatogenesis - fertilization - contraception : molecular, cellular and endocrine events in male reproduction /E[berhard] Nieschlag, U[rsula] F. Habenicht eds. ; S. Nigschlag ed. ass. - Berlin [etc]. : Springer-Veri. ,[19921 - XVI, 512 s. : il., wykr. ; 22 cm -1 (Schering Foundation Workshop 4) ISBN 3-540-55436-X Springer-Veri. Berlin [etc.] ISBN 0-387-55436-X Springer-Veri. New York [etc.]