Twins
Subtitle: a study of three pairs of identical twins.
By: With 30 charts.
Publisher: Imago Pub. Co.
Published: 1952
Place of publication: London
Language: eng
Number of pages: 94
Subjects: Twins.
Notes: Bibliography: p. 91-92.
"The material ... was collected in the Hampstead Nurseries in the years 1940-45."