Passos, A D <br/><br/>
[Socioeconomic level as an error-generating variable in studies of ethnicity].  [electronic resource] 

 -  Revista de saude publica  Jun 1978 
 - 122-8 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0034-8910 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Birth Order<br/>Birth Weight<br/>Ethnicity<br/>Female<br/>Gestational Age<br/>Humans<br/>Infant, Newborn<br/>Male<br/>Socioeconomic Factors<br/>Statistics as Topic