http://digfir-published.macmillanusa.com/df_mp_migration_test2/df_mp_migration_test2_twins_adopt.html
Chapter
74. Studying Intelligence in Twins and Adopted Children
5cb8ac6a7894d28b43000046
http://digfir-published.macmillanusa.com/df_mp_migration_test2/df_mp_migration_test2_twins_adopt_dlap.xmlDLAP questions5cb8ac6a7894d28b43000046