Ravindra, Anuradha Study on Development of Coincidence System with Plastic Scintillator for Beta and NaI(T1) for Gamma as an Absolute Standard for Radioactivity Measurements Ravindra, Anuradha - Pune Savitribai Phule Pune University 2021 Subjects--Index Terms: "Coincidence System, Plastic Scintillator, Beta and NaI, Gamma, Absolute Standard, Radioactivity Measurements"