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	1.	Comparative SEM study on the effect of acid etching with tetracycline HCl or citric acid on instrumented periodontally-involved human root surfaces. [electronic resource] by Lafferty, T A Gher, M E Gray, J L Producer: 19931117 In: Journal of periodontology vol. 64 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	A comparison of polylactic acid granules and decalcified freeze-dried bone allograft in human periodontal osseous defects. [electronic resource] by Meadows, C L Gher, M E Quintero, G Lafferty, T A Producer: 19930318 In: Journal of periodontology vol. 64 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)

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