TY  - BOOK
AU  - Hjelmfelt, Allen T .
AU  - Cassidy,John J  .
TI  - Hydrology for engineers and planners / 
SN  - 81-85046-73-5
U1  - 551.47802462 
PY  - 1985///
CY  - Jodhpur : 
PB  - Scientific Publishers , 
ER  -