A Critical Review of Logical Aspects Related to Dravya Sangrahana (Collection of Drugs) w.s.r to Audbhida Dravyas (Herbal Drugs) Journal title: International Journal of Ayurveda and Pharmaceutical Chemistry Authors: Aparna Nandakumar, Vidyashree ., Ashok Kumar B N, Vidyanand Mohan, Ravindra Angadi Subject(s):