Below replacement fertility 

 - xii, 348 páginas :  ilustraciones 
<br/><br/> "ST/ESA/SER.N/40-41"  "United Nations publication sales no. E.99.XIII.13" 
<br/><br/><label>ISBN: </label>9211513367 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilidad humana
<br/><br/><label>LC Class. No.: </label>HB901  / B45