TY  - BOOK
AU  - Longley, Paul A.
AU  - Michael F. Goodchild
TI  - Geographical information systems : principles, techniques, management and applications
SN  - 9780471735458
U1  - 910.285 
PY  - 2005///
CY  - England
PB  - John Wiley & Sons
KW  - Geography
N1  - Includes bibliographic references and index; N. B. D., Guwahati
ER  -