TY - BOOK A1 - Ilg, F. L. A1 - Ames, L. B. T1 - Child behaviour, New York (Harper & Brothers), 1955. Y1 - 1955 ER - TY - JOUR A1 - Ames, L. B. T1 - Summerhill: For and Against JF - H. H. Hart (Ed.), Summerhill: For & Against, New York (Hart Publishing Comp.) 1970, pp. 64-83. Y1 - 1970 ER -