Ningsih, Dian, Widyaningsih, Senny, AND Gunawan, Diah. " PRODUK SABUN CUCI TANGAN CAIR (HAND SOAP) DARI KULIT NANAS DESA SIWARAK KECAMATAN KARANGREJA KABUPATEN PURBALINGGA" Prosiding Seminar Nasonal LPPM UNSOED [Online], Volume 13 Number 1 (11 January 2024)