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		Putra Wibawa, I., 		Supardi, I., & 		Putra Adnyana, I.
2016 Feb  1.  PERANCANGAN ALAT UKUR GAS HIDROKARBON (HC) DENGAN MENGGUNAKAN SENSOR MQ-4 BERBASIS MIKROKONTROLER AT89S52. BULETIN FISIKA. [Online] 17:1