Kodithuwakku ND, Perera PK Standardization and quality control of Ayurveda powdered drug: DhathreeChurna. 4th International Conference on Ayurveda, Unani, Siddha & Traditional Medicine (ICAUST 2016), 8-10th December 2016, Institute of Indigenous Medicine, University of Colombo, Rajagiriya, Sri Lanka (iim.cmb.ac.lk/icaust2016)