1. The Development in Intelligence in the Child: summary of the works of Jean Piaget published between 1936 and 1948;AEBLI,1950
2. “Egocentrism” (Piaget) not a phase of mental development but a “substitute solution” for an insoluble task;AEBLI;Paedag. Europ.,1967
3. ANON., A pattern of development in moral judgements made by adolescents derived from Piaget's scheme of its development in childhood, Educ. Rev., 19, February 1967.
4. Does Piaget count—in our number syllabus?;BEARD;Teaching Arith.,1963
5. The order of concept development studies in two fields;BEARD;Educ. Rev.,1963