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Jamaludin J, Ramadhan HJ, Hariyanto D. STUDI EKSPERIMEN PENGGUNAAN VALVE HEAD MUSHROOM DAN VALVE HEAD TULIP PADA RECIPROCATING ENGINE TERHADAP PERFORMA ENGINE. jp [Internet]. 2020Nov.13 [cited 2025Aug.26];5(3):214-21. Available from: http://ejournal.poltekbangsby.ac.id/index.php/jurnalpenelitian/article/view/499