1. Theories of child development;Baldwin,1967
2. Greek theories of elementary cognition from Alcaemon to Aristotle;Beare,1906
3. An empirical basis for change in education;Becker,1971
4. Basic color terms: Their universality and evolution;Berlin,1969
5. Learning and operational convergence in logical thought development;Beilin;Journal of Experimental Child Psychology,1965