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The Effect of Urea and Sulphur Level in Mixing of Cassava Waste Fermented and Soybean Cake waste on Nitrogen Balance and Digestibility of Energy of Local Male Sheep. JAP [Internet]. 2011 May 4 [cited 2026 Oct. 30];3(2). Available from: https://jap.fapet.unsoed.ac.id/index.php/JAP/article/view/1036