TY  - GEN
AU  - Ward,R.C.
TI  - Principles of hydrology
SN  - 0070840555 (hbk.)
AV  - GB661 .W3 1975
U1  - 551.4 
PY  - 1975///
CY  - London
PB  - McGraw-Hill
KW  - Environmental Sciences
KW  - Hydrology
N1  - Includes reference & index
ER  -