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Sync Sync
wrote...
Posts: 2694
8 years ago
Social smiles typically first appear at
a.   birth.   c.   6 months of age.
b.   2 months of age.   d.   18 months of age.
Textbook 
Children and Their Development

Children and Their Development


Edition: 3rd
Authors:
Read 278 times
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Answer verified by a subject expert
AniaAnia
wrote...
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Posts: 2342
8 years ago
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More solutions for this book are available here
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Sync Author
wrote...
8 years ago
Thank you for your help.
wrote...
8 years ago
It wasn't any bother, happy to help Smiling Face with Open Mouth
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