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	1.	The measurement of happiness. [electronic resource] by Helm, D T Producer: 20010111 In: American journal of mental retardation : AJMR vol. 105 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	Research on parent training: shortcomings and remedies. [electronic resource] by Helm, D T Kozloff, M A Producer: 19860430 In: Journal of autism and developmental disorders vol. 16 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	3.	"This is your meeting": a qualitative study of person-centered planning. [electronic resource] by Hagner, D Helm, D T Butterworth, J Producer: 19960822 In: Mental retardation vol. 34 Availability: No items available. Save to lists Add to cart (remove)
	4.	Prenatal diagnosis of Down syndrome: mothers' reflections on supports needed from diagnosis to birth. [electronic resource] by Helm, D T Miranda, S Chedd, N A Producer: 19980401 In: Mental retardation vol. 36 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	5.	Workplace culture, social interactions, and supports for transition-age young adults. [electronic resource] by Butterworth, J Hagner, D Helm, D T Whelley, T A Producer: 20001016 In: Mental retardation vol. 38 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)