Manyele SV. COMPARATIVE STUDY OF THE DYNAMICS OF CIRCULATING FLUIDIZED BED RISER AND DOWNER OF EQUAL DIAMETERS. TJET [Internet]. 2018 Aug. 5 [cited 2024 Dec. 5];27(2). Available from: https://journals.udsm.ac.tz/index.php/tjet/article/view/1963