TY  - GEN
AU  - Chang,Kang-Tsung
TI  - Introduction to geographic information systems
SN  - 0070658981
U1  - 910.285 
PY  - 2007///
CY  - New Delhi
PB  - Tata Mc-Graw Hill Publishing
N1  - Includes  bibliographical references and index
ER  -