Hayon, Leonardus, 		Alimuddin, Alimuddin, AND 		Panggabean, Aman.
" VALIDATION METHOD OF DETERMINATION OF Cd (II) IN NPK FERTILIZER BY FLAME ATOMIC ABSORPTION SPECTROPHOTOMETRY AT THE QUALITY CONTROL LABORATORY, PT. PUPUK KALIMANTAN TIMUR" <em>JURNAL KIMIA MULAWARMAN</em> [Online], Volume 19 Number 1 (30 November 2021)