TY  - BOOK
AU  - Ward, R. C
AU  - Robinson, M
TI  - Principles of hydrology
SN  - 0077072049
SN  - 88032409
U1  - 551.4 WAR 
PY  - 1990///
CY  - New York
PB  - McGraw-Hill
KW  - Hydrology
N1  - Includes bibliographical references and index
ER  -