School of Humanities, Universiti Sains Malaysia, Penang, Malaysia; Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh
School of Humanities, Universiti Sains Malaysia, Penang, Malaysia
Copyright © 2014 Ranjan Roy, Ngai Weng Chan et al. This is
an open access article distributed under the Creative Commons Attribution
License, which permits unrestricted use, distribution, and reproduction in any
medium, provided the original work is properly cited.