A technique for studying the social-material activities of young children
By: by Margaret Barker, PH. D.
Contributors: Columbia University. Teachers College. Child Development Institute.
Series: Child development monographs -- Monography no. 3.; Child development monographs -- no. 3.
Publisher: Teachers college, Columbia university
Published: 1930
Place of publication: New York
Language: eng
Number of pages: 69
Subjects: Child development -- Study and teaching
Notes: "The children observed, two to three years of age, attended the nursery school of the Child development institute."

Issued also as thesis (PH.D) Columbia university.