Rozeena Nigar Osman, and G. GaneshKumar. 2022. “Development and Evaluation of Push Pullosmotic Pump Tablets of Valsartan by Using Ntural Polymers”. IJPAR JOURNAL 8 (4):463-71. https://doi.org/10.61096/ijpar.v8.iss4.2019.463-471.