TY - JOUR AU - Editor Spektra PY - 2019/12/31 Y2 - 2024/03/29 TI - FRONT MATTER SPEKTRA VOLUME 4 ISSUE 3, DECEMBER 2019 JF - Spektra: Jurnal Fisika dan Aplikasinya JA - SPEKTRA VL - 4 IS - 3 SE - Editorial Section DO - 10.21009/SPEKTRA.04300 UR - https://journal.unj.ac.id/unj/index.php/spektra/article/view/13544 AB - ER -