First Author:   Sushil Kr. Haldar Jadavpur University sushil.haldar@gmail.com   Jadavpur University, Jadavpur University, Kolkata-700032 Kolkata, 700032, India   +91-33-2414-6328(Phone) +91-33-2414-6328(Fax) www.jaduniv.edu.in Second Author: Gargi Bhattacharya Mahadevananda Mahavidyalaya g.b82here@gmail.com   Assistant Professor, Department of Economics, Mahadevananda Mahavidyalaya Barrackpore, Kolkata, 700120, India   +91-33-25920577(Phone)   http://www.mahadevanandamahavidyalaya.com/