OPTIMIZATION OF ENGINE SERVICE TIME SYSTEM AND P2H ON OHT CAT 777 HEAVY EQUIPMENT AT PT. SITUS SAPTAINDRA SEJATI ADMO SOUTH KALIMANTAN. Injection [Internet]. 2023 Aug. 31 [cited 2026 Sep. 26];3(2):52-7. Available from: https://injection.jurnal.politap.ac.id/index.php/injection/article/view/1774