TY  - BOOK
AU  - CHANG Kang-Tsung
TI  - Introduction to geographic information systems
T2  - Studies Of The American
SN  - 9789814636216
U1  - U:(D6,9(B), Q6 
PY  - 2016///
CY  - New York
PB  - Mcgraw-Hill         
KW  - Geography
N1  - Bibliography: p181-193
ER  -