1. Faculty of Spatial Sciences, University of Groningen, PO Box 800, 9700
AV, Groningen, The Netherlands.
2. J. S. S. Institute of Economic Research, Vidyagiri, Dharwad 580 004,
Karnataka, India.
3. ICHAP, Pisces Building, #4/13-1 Crescent Road, High Grounds, Bangalore
560 001, Karnataka, India.