TY  - BOOK
ED  - World Health Organization.
TI  - Calcium and magnesium in drinking-water: public health significance
SN  - 9241563559
U1  - 363.61 
PY  - 2009///
CY  - Geneva, Switzerland
PB  - World Health Organization
KW  - Agua potable
KW  - Dureza del agua
N1  - Incluye bibliografía; Also available online
UR  - http://whqlibdoc.who.int/publications/2009/9789241563550%5Feng.pdf
UR  - http://whqlibdoc.who.int/publications/2009/9789241563550_eng.pdf
ER  -