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	1.	[Vitamin A and the prevention of bronchial cancer - facts and expectations]. [electronic resource] by Sporny, S Sporna, E Producer: 19831217 In: Polski tygodnik lekarski (Warsaw, Poland : 1960) vol. 38 Availability: No items available. Save to lists Add to cart (remove)
	2.	[Evaluation of prognostic factors and progress of disease in patients with COPD treated with long-term oxygen]. [electronic resource] by Górecka, D Czajkowska-Malinowska, M Jedrzejczak, M Filipowska, M Sokołowska, L Sporna, E Nykiel, E Małosek, D Tobiasz, M Sliwiński, P Pułka, M J Producer: 19970115 In: Pneumonologia i alergologia polska vol. 64 Availability: No items available. Save to lists Add to cart (remove)

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