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	1.	Selected parameters of response organization in mildly mentally retarded children. [electronic resource] by Porretta, D L Producer: 19870515 In: Perceptual and motor skills vol. 64 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	Organizational effects on recall of a movement series by mildly mentally retarded adolescents. [electronic resource] by Porretta, D L Producer: 19870227 In: Perceptual and motor skills vol. 63 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	3.	Motor schema formation by EMR boys. [electronic resource] by Porretta, D L Producer: 19821202 In: American journal of mental deficiency vol. 87 Availability: No items available. Save to lists Add to cart (remove)
	4.	The use of contextual interference trials by mildly mentally handicapped children. [electronic resource] by Porretta, D L O'Brien, K Producer: 19911028 In: Research quarterly for exercise and sport vol. 62 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	5.	Imagery and physical practice in the acquisition of gross motor timing of coincidence by adolescents with mild mental retardation. [electronic resource] by Porretta, D L Surburg, P R Producer: 19951212 In: Perceptual and motor skills vol. 80 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	6.	Motor task persistence of children with and without mental retardation. [electronic resource] by Kozub, F M Porretta, D L Hodge, S R Producer: 20000323 In: Mental retardation vol. 38 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)