TY  - BOOK
AU  - Chang,Kang Tsung, x
AU  - x
TI  - Introduction to geographic information systems: -
SN  - 9780073051154
U1  - 910.9/C454i 
PY  - 2008///
CY  - New Delhi
PB  - Tata Mc Grew Hill
KW  - geographic information systems
KW  - Geography
N1  - Includes
ER  -