Dibble, E <br/><br/>
Methodological issues in twin research: the assumption of environmental equivalence.  [electronic resource] 

 -  Progress in clinical and biological research  1978 
 - 245-51 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0361-7742 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Child Development<br/>Female<br/>Humans<br/>Infant, Newborn<br/>Male<br/>Obstetric Labor Complications<br/>Pregnancy<br/>Pregnancy Complications<br/>Research Design<br/>Sex Factors<br/>Social Class<br/>Social Environment<br/>Surveys and Questionnaires<br/>Twins<br/>Twins, Dizygotic<br/>Twins, Monozygotic