TY  - BOOK
AU  - Heywood, Ian
AU  - Cornelius, Sarah
TI  - An introduction to geographical information systems
SN  - 9788131731932
U1  - 551.0113 
PY  - 2010///
CY  - Noida
PB  - Pearson Education India
KW  - Data modelling
KW  - Geographical information systems
KW  - Geology
N1  - Includes index
ER  -