Spratley, E <br/><br/>
Interval between births: United States, 1970-77.  [electronic resource] 

 -  Vital and health statistics. Series 21, Data from the National Vital Statistics System  Aug 1981 
 - 1-47 p.  digital 
<br/><br/> Publication Type: Comparative Study; Journal Article 
<br/><br/><label>ISSN: </label>0083-2030 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adolescent<br/>Adult<br/>Black or African American<br/>Birth Intervals<br/>Birth Order<br/>Educational Status<br/>Female<br/>Fertility<br/>Fetal Death<br/>Humans<br/>Infant, Low Birth Weight<br/>Infant, Newborn<br/>Maternal Age<br/>Middle Aged<br/>Pregnancy<br/>Risk<br/>Statistics as Topic<br/>United States<br/>White People