TY  - BOOK
AU  - Heywood, Ian ;
AU  - Cornelius,  Sarah , 
AU  - Carver,  Steve;
TI  - Geographical Information systems
SN  - 9788178089829 
U1  - 910.02 
PY  - 2002///
CY  - Delhi
PB  - Pearson Education
N1  - Included Glossary, Index
ER  -