Pengaruh Kombinasi Proses Termal dan Agitasi Mekanik terhadap Presipitasi serta Morfologi Partikel CaCO3 dalam Air Sadah = The Effect of Combination between Thermal and Mechanical Agitation Processes to the Precipitation and Morphology of CaCO3 in Hardwater - Khofiful Walidani, author (Fakultas Teknik Universitas Indonesia, 2012)