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	1.	The significance of ego psychology for the concept of minimal brain dysfunction in children. [electronic resource] by Leventhal, D S Producer: 19680731 In: Journal of the American Academy of Child Psychiatry vol. 7 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	Perceptual and conceptual categorization in stimulus generalization. [electronic resource] by Leventhal, D S Producer: 19681209 In: Perceptual and motor skills vol. 27 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)

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