https://doi.org/10.35974/jpd.v4i2.2518
			
				
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				https://doi.org/10.35974/jpd.v4i2.2528
			
				
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				https://doi.org/10.35974/jpd.v4i2.2536
			
				
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				https://doi.org/10.35974/jpd.v4i2.2538
			
				
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