He has three years industrial and twenty one years of teaching experience and has published seventy research papers in major national and international journals and has guided six PhD students. He was invited as a Visting Professor in Academia Sinica (Taiwan), University of Campabasso( Italy ) and Universidad de Córdoba( Spain). Professor Nag is the author of five other books: Analytical Techniques in Agriculture, Biotechnology, and Environmental Engineering; Environmental Education and Solid Waste Management; Foundry Materials and Pollution; Text Book of Agriculture Biotechnology and Biofuels refining and performances. "About this title" may belong to another edition of this title.