Fitria Agustina , I., Rustianingsih , E., & Febrianti Efendi, S. (2024). OPAC: INNOVATION OF LIBRARY SERVICES IN THE DIGITAL ERA AT SMK NEGERI 1 SIDOARJO. Journal of Geography, Regional Planning and Development, 1(2), 49–55. https://doi.org/10.61796/jgrpd.v1i2.1258