1. Value and limitation of infant testing.;Bayley;Children,1958
2. Behaviorial disturbances in the mentally retarded.;Beier,1964
3. Theory and research in mental (developmental) retardation.;Bijou;Psychol. Rec.,1963
4. Child development: A systematic and empirical theory.;Bijou,1961
5. Child development: The universal stage of infancy.;Bijou,1965