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	1.	[Experiences with the new air purification legislation in Great Britian]. [electronic resource] by LESSING, R Producer: 19981101 In: Zentralblatt fur Bakteriologie : international journal of medical microbiology vol. 176 Availability: No items available. Save to lists Add to cart (remove)
	2.	[Questions of animal welfare in horse racing and in jousting]. [electronic resource] by Lessing, R Producer: 19880624 In: DTW. Deutsche tierarztliche Wochenschrift vol. 95 Availability: No items available. Save to lists Add to cart (remove)
	3.	[History of the Association of German Veterinary Officers]. [electronic resource] by Raack, C Lessing, R Producer: 20010208 In: DTW. Deutsche tierarztliche Wochenschrift vol. 107 Availability: No items available. Save to lists Add to cart (remove)
	4.	The loadability of the 0.8-mm micro-system in thin midfacial regions--an animal experimental study. [electronic resource] by Bähr, W Lessing, R Producer: 19921123 In: Journal of cranio-maxillo-facial surgery : official publication of the European Association for Cranio-Maxillo-Facial Surgery vol. 20 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	5.	The response of midfacial bone in sheep to loaded osteosynthesis screws in pretapped and nontapped implant sites. [electronic resource] by Bähr, W Lessing, R Producer: 19921229 In: Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons vol. 50 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	6.	A comparative animal experimental study of differently dimensioned osteosynthesis screws used in the mid-face. [electronic resource] by Bähr, W Lessing, R Producer: 19940222 In: The British journal of oral & maxillofacial surgery vol. 31 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)