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	1.	The usefulness of the IQ in predicting the performance of moderately mentally retarded children. [electronic resource] by Sellin, D F Producer: 19671005 In: American journal of mental deficiency vol. 71 Availability: No items available. Save to lists Add to cart (remove)
	2.	Mental retardation 1984: will the paradox end? [electronic resource] by Sellin, D F Producer: 19711109 In: Mental retardation vol. 9 Availability: No items available. Save to lists Add to cart (remove)
	3.	Measuring the self concept of ability as a worker. [electronic resource] by Burke, D A Sellin, D F Producer: 19730403 In: Exceptional children vol. 39 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	4.	Self concept of ability as a worker scale. [electronic resource] by Burke, D A Sellin, D F Producer: 19730403 In: Exceptional children vol. 39 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)

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