1. Symbolic wounds: Puberty rites and the envious male;Bettelheim,1955
2. Logical foundations of probability;Carnap,1951
3. The intentions of intentionality and other models for modalities;Hintikka,1975
4. Play, dreams, and imitation in childhood;Piaget,1962
5. Cours de linguistique générale;de Saussure,1972