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4. ANDERS, T., EMDE, R. N., & PARMELEE, A. H., Eds. (1971), A Manual of Standardized Terminology, Techniques and Criteria for Use in Scoring States of Sleep and Wakefulness in Newborn Infants. UCLA Brain Information Service, NINDS Neuro logical Information Network.
5. Further comments on some developmental aspects of anxicty. In: Counterpoint;Benjamin,1963