MEASUREMENT OF WORKING TIME IN THE PRODUCTION PROCESS ”KERUPUK IKAN”IN GRESIK HOME INDUSTRY: MEASUREMENT OF WORKING TIME IN THE PRODUCTION PROCESS ”KERUPUK IKAN”IN GRESIK HOME INDUSTRY. Tibuana 2018, 1 (1), 20-23. https://doi.org/10.36456/tibuana.1.1.1586.20-23.