Selected symptoms of psychological distress 

 - Rockville, MDo. USA :  NCHS,  MDo., c1970. 
 - 44p. 
 - Serie: Vital and Health Statistics;  11-37 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psicofisiología-Entrevistas--Población.
<br/><br/><label>Dewey Class. No.: </label>VHS  / NCHS