TY  - GEN
AU  - Chang, Kang Tsung
TI  - Introduction to geographic information systems
SN  - 9780071259200
U1  - 526.9  
PY  - 2008///
CY  - Boston
PB  - MCGRAW HILL.
KW  - NUST
N1  - Geographic information system, is, used as text book

ER  -