Erniati, E. 2018. Level of Education, Knowledge, Attitude Sellers Meatballs and Borax Used in Meatballs in Lemahputro III Elementary School. JURNAL KESEHATAN LINGKUNGAN . 9, 2 (Jul. 2018), 209–216. DOI:https://doi.org/10.20473/jkl.v9i2.2017.209-216.