Work, B A <br/><br/>
Care in early pregnancy.  [electronic resource] 

 -  Early human development   
 - 107-9 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0378-3782 
<br/><br/><label>Standard No.: </label>10.1016/0378-3782(92)90064-n  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Female<br/>Humans<br/>Obstetric Labor, Premature--prevention & control<br/>Pregnancy<br/>Pregnancy Trimester, First<br/>Prenatal Care--methods