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  Boliviyada kichik hajmdagi tovuq najasi bioo'g'it ishlab chiqarish
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  Frantsiyada bioo'g'it sifatida ot go'ngidan foydalanish yechimi
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  Eronda o'g'it sifatida ovqat hazm qilishdan foydalanish mumkin
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  How to Make Biofertilizer from Chicken Manure in Russia