TY  - GEN
AU  - Chang, Kang-Tsung.
TI  - Introduction to geographic information systems /Kang-tsung Chang
SN  - 9789814636216
SN  - 981463621
AV  - G70.212 cha
CY  - New York: McGraw Hill, 2016.
KW  - Geographic information systems
ER  -