Californium
Links
ChemicalElements.com: Californium
http://www.chemicalelements.com/elements/cf.html
Basic information, atomic structure, and isotopes table.
It's Elemental: Californium
http://education.jlab.org/itselemental/ele098.html
Basic physical and historical information.
Californium
http://www.scescape.net/~woods/elements/californium.html
Data tables and historic information.
Visual Elements: Californium
http://www.chemsoc.org/viselements/pages/californium.html
General and physical information, uses, and key isotopes.
EnvironmentalChemistry.com: Californium
http://environmentalchemistry.com/yogi/periodic/Cf.html
Atomic structure, chemical and physical properties, and table of nuclides.
WebElements: Californium
http://www.webelements.com/webelements/elements/text/Cf/key.html
Extensive information on history, uses, compounds, and properties.
Lenntech: Californium
http://www.lenntech.com/Periodic-chart-elements/Cf-en.htm
Physical data, chemical properties, health and environmental effects.