Archives

• April 2022

  Vol. 20 No. 1 (2022)

  Starting from Volume 20 Number 1 2022, the journal website has been continued to (new website) here:

  http://journal3.uad.ac.id/index.php/spektrum/issue/view/18

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  October 2021

  Vol. 19 No. 2
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  April 2021

  Vol. 19 No. 1
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  October 2020

  Vol. 18 No. 2
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  April 2020

  Vol. 18 No. 1
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  Oktober 2019

  Vol. 17 No. 2
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  April 2019

  Vol. 17 No. 1
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  Oktober 2018

  Vol. 16 No. 2
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  April 2018

  Vol. 16 No. 1
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  Oktober 2017

  Vol. 15 No. 2
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  April 2017

  Vol. 15 No. 1
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  Oktober 2016

  Vol. 14 No. 2
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  APRIL 2016

  Vol. 14 No. 1
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  Oktober 2015

  Vol. 13 No. 2
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  April 2015

  Vol. 13 No. 1
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  Oktober 2014

  Vol. 12 No. 2
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  April 2014

  Vol. 12 No. 1
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  Oktober 2013

  Vol. 11 No. 2
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  April 2013

  Vol. 11 No. 1
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  Oktober 2012

  Vol. 10 No. 2
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  April 2012

  Vol. 10 No. 1