Biblio

WHO -Geneva, CH, World Health Organization, Calcium and magnesium in drinking water : public health significance. Geneva, Switzerland: World Health Organization (WHO), 2009, p. xi, 180 p. : fig., tab.

WHO -Geneva, CH, World Health Organization, Guidelines for drinking-water quality. Vol. 3. Surveillance and control of community supplies, 2nd ed.nd ed. Geneva, Switzerland: World Health Organization (WHO), 1997, p. xii, 238 p. : fig., tab.

WHO -Geneva, CH, World Health Organization, “Upgrading drinking water treatment plants : a manual for design and operation”. World Health Organization (WHO), Geneva, Switzerland, p. ca. 400 p. : fig., ill., tab., 1996.

WHO -Geneva, CH, World Health Organization, “Establishing and equipping water laboratories in developing countries”. World Health Organization (WHO), Geneva, Switzerland, p. 54 p.: fig., tab., 1986.

WHO -Geneva, CH, World Health Organization, Surveillance of drinking-water quality, vol. no. 63. Geneva, Switzerland: World Health Organization (WHO), 1976, p. 135 p.: 16 fig., 9 tab.