TY  - GEN
AU  - Siddiqui,Masood Ahsan  .
TI  - Introduction to Geographical Information system / 
SN  - 81 86204 77 6
U1  - 910 
PY  - 2006///
CY  - Allahabad
PB  - Sarada Pustak Bhawan , 
KW  - Geography
N1  - Rs.180; NULL
ER  -