TY - JOUR TI - Origins of knowledge N1 - Lecture 3; Physical world U1 - Essential JF - Psychological Review AU - Spelke, Elizabeth S.Breinlinger, Karen Macomber, Janet Jacobson, Kristen UR - https://search.proquest.com/docview/614332521/fulltextPDF/96AEC447940A4F84PQ/2?accountid=14783 PY - Oct 1992 EP - 632 SP - 605 VL - 99 ER -