TY  - BOOK
AU  - CHANG, Kang-Tsung
AU  - 
TI  - Introduction to geographic information systems
SN  - 0070495521
U1  - 910 
PY  - 2002///
CY  - DELHI
PB  - TATA MCGRAW-HILL
KW  - GEOGRAPHY AND TRAVEL
ER  -