The nature and nurture of intelligence
By: Steven G. Vandenberg
Series: Report no. 20; Report -- no. 20
Publisher: University of Louisville
Published: 1966
Place of publication: Louisville, Ky
Language: eng
Number of pages: 60
Subjects: Intelligence levels; Human genetics; Twins
Other titles: Louisville twin study
Notes: Research report from the Louisville twin study, Child development unit, Department of Pediatrics, University of Louisville

Includes bibliographical references