ANALYSIS OF METAL CONTENTS IN WELL WATERAT THE ATK YOGYAKARTA POLYTECHNIC LABORATORY. Settings Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit [Internet]. 2024 Dec. 16 [cited 2024 Dec. 22];23(1):72-9. Available from: https://e-jurnal.atk.ac.id/index.php/bptkspk/article/view/50