547,771 SPERM Sperm measures and reproductive success : Institute for health Policy Analysis Forum on Science, Health and Environmental Risk Assesment : proceedings of the Workshop, Sperm [...], Held at the Aspen Institute at Wye Plantation, Queenstown, Maryland, January 11-13, 1988 / ed. Edward J. Burger [et al.] . -New York : Alan R. Liss, Inc., [1989], - XXIV, 313 s. : wykr. ; 24 cm (Progress in Clinical and Biological Research ; vol. 302) ISBN 0-8451-5152-5