TY  - BOOK
AU  - Varshney, R.S.
TI  - Water resources systems: Planning and economics / 
SN  - 81-85240-40-X
U1  - 553.7 
PY  - 1990///
CY  - Roorkee : 
PB  - Nem Chand And Bros , 
N1  - **Reference
ER  -