PENGENDALIAN KUALITAS PRODUK PUPUK GRANULE PHOSPAT P20 DENGAN PENDEKATAN STATISTICAL PROCESS CONTROL (SPC) PADA PT. SUWARNI AGRO MANDIRI PLANT MOJOKERTO. (2018). JKIE (Journal Knowledge Industrial Engineering), 3(3). https://doi.org/10.35891/jkie.v3i3.871