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	1.	Distanced perspectives: AIDS, anencephaly, and AHP. [electronic resource] by Koch, T Ridgley, M Producer: 19980702 In: Theoretical medicine and bioethics vol. 19 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	A lever-pressing device for fluid rewards. [electronic resource] by RIDGLEY, M O'KELLY, L I FALK, J L Producer: 20020501 In: The American journal of psychology vol. 70 Availability: No items available. Save to lists Add to cart (remove)

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