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The Endowment for Human Development
The Endowment for Human Development
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Right- and Left-Handedness


8 weeks

From The Biology of Prenatal Development.Buy Now

Script: នៅពេល ៨ សប្តាហ៍នេះ ៧៥5នៃអំប្រ៊ីយ៉ុង សំដែងអោយឃើញភាពលប់នៅផ្នែកខាងស្តាំ ។ ផ្នែកដែលសេសសល់គឺបែងចែកស្មើគ្នា រវាងភាពលប់ផ្នែកខាងឆ្វេង ហើយនិងគ្មានការលំអៀង ។ នេះគឺជាភស្តុតាងដំបូងបង្អស់នៃ ការប្រើដៃស្តាំ រឺ ដៃឆ្វេង ។

All ages referenced to fertilization, not last menstrual period.
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