the application of u0441u0435u043cu00a0u043d u043cu0430u043bu043eu0433u043bu044eu043au043eu0437u0438u043du043eu043bu0430u0442u043du044bu0445 varieties of mustard (brassica u0441u0430u0440u0435u043fu0442u0441u043au043eu0439 juncea Czern) as additive of natural bards.
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