Research on fertility and sterility :  proceedings of the Xth World Congress on Fertility and Sterility held in Madrid, Spain on July 50-11 1980 / 
edited by J. Cortes Prieto, A. Campos da Paz and M. Neves-e-Castro. 
 - Lancaster :  MTP Press Ltd.,  1981. 
 - 456 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0852003579 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertility.<br/>Sterility.