Irawan, A., Tyagita, D. A. and Retnowati, N. (2020) “Crystallization Machine for Making Supplements to Prevent Covid 19 in Kemuning Lor Village, Jember”, J-Dinamika : Jurnal Pengabdian Masyarakat, 5(2), pp. 11–14. doi: 10.25047/j-dinamika.v5i2.2396.