- MS-1-Ref, Box 149, Folder 8
- Item
- 1967
Item is an offprint of an article written by Barbara Clark and published in Child Study 29 (Fall and Winter 1967): 17-27.
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Archival Description 
- MS-1-Ref, OS Box 22, Folder 16, item 1
- Item
- 1958
Item is a hand-produced, coloured graph.