The first SPEKTRA is published in 2007 with an old p-ISSN on the website http://js-unj.ac.id. Starting in 2016, SPEKTRA has new e-ISSN and now published on page http://journal.unj.ac.id/unj/index.php/spektra and under the supervision of LPPM UNJ.
E-ISSN: 2541-3392P-ISSN: 2541-3384
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ABSTRACTING & INDEXING:
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