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	1.	[The use of trace elements for the prevention and therapy of anemia in pigs]. [electronic resource] by Prokopenko, A A Iarov, I I Producer: 19680121 In: Veterinariia vol. 43 Availability: No items available. Save to lists Add to cart (remove)
	2.	[Disinfection of the sewage from plants in the production of meat and bone meal]. [electronic resource] by Son, K N Prokopenko, A A Krivopishin, I P Producer: 19790626 In: Veterinariia no. 2 Availability: No items available. Save to lists Add to cart (remove)

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