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. JSCS 2023, 4, 1-15.