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Sultana S, Yeasmin Z, Ahmed S, Nur H, Samaddar P. Characterization and surface activity of soluble sulfonated butanone formaldehyde superplasticizer for cement. Bangladesh J. Sci. Ind. Res. [Internet]. 2016 Jun. 12 [cited 2024 Jul. 17];51(2):155-8. Available from: https://banglajol.info/index.php/BJSIR/article/view/28113