Preliminary Study on Plastic Waste Handling in Semarang City - Indonesia: Estimated Generation and Existing ManagementAndarani Pertiwi, S.M. Puspandiyah Kiky, Budiawan Wiwik, Purwaningsib Ratna, P. Samadikun Budi and Rezagama AryaE3S Web Conf., 73 (2018) 07008DOI: https://doi.org/10.1051/e3sconf/20187307008