M. M. TUNIO, A. J. LAGHARI, Z. M. ALI, M. A. KAZI and G. M. MASTO 2018. Comparative study of organic Polyelectrolyte in Municipal wastewater treatment . Sindh University Research Journal - SURJ (Science Series). 50, 2 (May 2018). DOI:https://doi.org/10.26692/surj.v50i2.1350.