Darwanto, Dwidjono Hadi, Unipdu (Universitas Pesantren Tinggi Darul 'Ulum), Indonesia
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Prosiding Seminas Competitive Advantage Vol. 1 No. 2 (2012): Seminas Competitive Advantage II - Prosiding Pertanian
Pendugaan Model Permintaan Ubi Kayu Di Indonesia
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