TY  - BOOK
AU  - Siddiqui, Masood Ahsan
TI  - Introduction to geographical information systems
SN  - 8186204776
U1  - 910.10015 
PY  - 2006///
CY  - Allahabad
PB  - Shaeda Pustak Bhawan
KW  - Geography--Information technology
KW  - Geographical information systems
ER  -