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		C.R., L., 		Inggriati, N., & 		Suarta, I.
2024 Jul  2.  THE LEVEL OF MOTIVATION OF FARMERS IN  INTENSIVE PIG BREEDING   (Case Study in Sipinggan Lumbansiantar Village Nainggolan  District Samosir Regency North Sumatra Province). Jurnal Peternakan Tropika. [Online] 12:4