Inayati, E., Salim, S., Harwasih, S., & Indiani, S. R. (2015). Levels of crystalline silica dust in dental laboratorium of Dental Health Technology Study Program of Vocational Faculty, Universitas Airlangga. Dental Journal, 48(4), 183–187. https://doi.org/10.20473/j.djmkg.v48.i4.p183-187