Widjijono. “CORRELATION BETWEEN CALCIUM BENTONITE CONCENTRATION AND PARAFFIN WAX TO THE HARDNESS OF CARVING WAX: HUBUNGAN ANTARA KONSENTRASI KALSIUM BENTONIT DENGAN PARAFIN MALAM TERHADAP KEKERASAN MODEL MALAM”. Dentika: Dental Journal, vol. 14, no. 1, July 2009, pp. 20-23, doi:10.32734/dentika.v14i1.1969.