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The Endowment for Human Development
The Endowment for Human Development
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Skin and Hair


5 months

From The Biology of Prenatal Development.Buy Now

Script: හිසින් පහල කොටසට ද කෙස් වැවීමට පටන් ගනියි.

සෑම චර්ම ස්තර සහ නිර්මිතයන්, කෙස්වල කුහර ඇතුලු ග්‍රන්ථීන් දක්නට ලැබෙනු ඇත.

All ages referenced to fertilization, not last menstrual period. One month = 4 weeks.
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Free resources and training for educators
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