LESTARI, B.; WIDIYOWATI, E.; SUYONO, A.; ANJARI, B. G.; POERNAMAWATI, D. E.; PRATAMA, C. R. TRAINING AND MENTORING ON PACKAGING OPTIMIZATION OF POLINEMA CRISPY DUWET BANANA GEDEBOG CHIPS IN THE COMMUNITY OF DUWET VILLAGE, TUMPANG SUB-DISTRICT, MALANG DISTRICT. JOURNAL OF SUSTAINABLE COMMUNITY SERVICE , v. 4, n. 1, p. 1-15, 3 Nov. 2023.