TY  - BOOK
AU  - Singh,R.L.
AU  - Singh,Rana P.B.
TI  - Elements of practical geography
SN  - 8170964415
U1  - 912.0148 21
PY  - 1991///.[Reprinteed 1998]
CY  - New Delhi
PB  - Kalyani Pub.
KW  - Geographic information
ER  -