@base . a ; "2714-8173" ; . a , , ; , , ; "Stannum : Jurnal Sains dan Terapan Kimia." ; ; ; ; "2714-8173" ; ; ; "2714-8173" ; ; "2714-8173" ; "Stannum : Jurnal Sains dan Terapan Kimia." , "Stannum : Jurnal Sains dan Terapan Kimia (Online)" ; ; "http://journal.ubb.ac.id/index.php/stannum/" . . a ; "2714-8173" ; . a ; ; "20210207014300.0"^^ ; ; . a , ; "Stannum : Jurnal Sains dan Terapan Kimia (Online)" . a ; . "Indonesia" . a .