Pohan, Lisa Ariyanti, FKIP, Universitas Islam Sumatera Utara, Medan, Indonesia, Indonesia

• Vol 11, No 3 (2019): December - Articles
  The effects of hand soap making practice with addition of pineapple skin extract (Ananas comosus L. Merr) on learning interests in colloidal materials in senior high school
  Abstract  PDF

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