Shps, Mindl C. <br/><br/>
Mathematical models of conception and birth  Mindel C. Sheps and Jane A. Menken, with the assistance of Annette P. Radick 

 - Chicago:  The University Press,  c1973 
 - xxiii, 428 p.;  24 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0226752453  £ 18.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Childbirth--Statistics<br/>Birth intervals<br/>Birth control
<br/><br/><label>Dewey Class. No.: </label>612.63018