TY  - BOOK
AU  - Gray,Donald M.
TI  - Handbook on the principles of hydrology: with special emphasis directed to Canadian conditions in the discussion, applications and presentation of data
U1  - 551.48 
PY  - 1970///
CY  - Huntington, N.Y.
PB  - National Research Council of Canada
KW  - HIDROLOGIA
KW  - MANUALES
ER  -