TY  - BOOK
AU  - Heywood,Ian
AU  - Carver,Steve
AU  - Corneulius,Sarah
AU  - Raju,Srinivasa
TI  - An Introduction to Geographical Information Systems / 
U1  - 025.0691 
PY  - 2006///
CY  - New Delhi : 
PB  - Pearson Education , 
KW  - Geographical Information syste
ER  -