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39
Friendships and adaptation in the life course.
Authors:
Willard Hartup
,
Nan Stevens
The company they keep: friendships and their developmental significance.
Authors:
Willard Hartup
Imaginary companions of preschool children.
Authors:
Tracy R Gleason
,
Anne Sebanc
,
Willard Hartup
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Willard W. Hartup
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