Syamsyir, S.; Uddin, S. .; Erlinda, N. .; Basrizal, B. Development of a Diesel Engine Maintenance Textbook for Nautical Technology Students at West Sumatra Shipping Polytechnic. <meta name="google-site-verification" content="hk1EvV2s9SCchFUV_4f7GgLdW5pQDckkxwSCWkj4stU" /> 2025, 3, 943-948.