Irwanto J. Innovation Of Batik Design Method Of Arithmetics Line In The Trade Of Riangle In Improving Batik Sales In Lumajang District. adv [Internet]. 2017Dec.31 [cited 2024May17];1(2):130-44. Available from: https://ejournal.itbwigalumajang.ac.id/index.php/adv/article/view/193