TY  - BOOK
AU  - Heywood,Ian \\
AU  - -
TI  - An introduction to geographical information systems \\\: . \\\
SN  - 9788177587845
U1  - 910.9/H622i  
PY  - 0000///Pearson Educaton
PY  - 0000///
CY  - Delhi, India 
KW  - Geography, Geography
N1  - Bibliography : P. 255-281, Index(283-87), glossary(271-81)
ER  -