TY  - BOOK
AU  - Hem,John D.
TI  - Study and interpretation of the chemical characteristics of natural water
T2  - United States. Geological Survey. Water-supply paper
U1  - 551.48 23
PY  - 1975///
CY  - Washington
PB  - U.S. Govt. Print. Off.
KW  - Water chemistry
KW  - Química del agua
N1  - Bibliografía: pp. 338-358
ER  -