Suggested Readings:
1. Dent, B.D, 1999: Cartography: Thematic Map Design, Mc Graw Hill
2. Gupta K K and Tyagi V.C. 1992: Working with Maps, Survey of India, DST, New Delhi.
3. Steers. J.A, 1965: An Introduction to the study of Map Projections, University of London.