Home › Authors › Purshotam Kaushik 👤 Purshotam Kaushik 3 books Books by Purshotam Kaushik Spice drugs Spice drugs 2017 Cyanobacteria - Antibacterial Cyanobacteria - Antibacterial Activity 2009 MICROBIOLOGY : QUESTIONS AND A MICROBIOLOGY : QUESTIONS AND ANSWERS 2008