Bismuth

ChemGlobe: Bismuth
Electronic, thermal, and steric data along with an isotope table.
http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/83.html

ChemicalElements.com: Bismuth
Basic information, atomic structure, and table of isotopes.
http://www.chemicalelements.com/elements/bi.html

EnvironmentalChemistry.com: Bismuth
Atomic structure, chemical and physical properties, and table of nuclides.
http://environmentalchemistry.com/yogi/periodic/Bi.html

It's Elemental: Bismuth
Basic physical and historical information.
http://education.jlab.org/itselemental/ele083.html

LANL: Bismuth
History, sources, properties, and uses.
http://periodic.lanl.gov/elements/83.html

Lenntech: Bismuth
Physical data, chemical properties, health and environmental effects.
http://www.lenntech.com/Periodic-chart-elements/Bi-en.htm

USGS Minerals Information: Bismuth
Statistics and information on the worldwide supply, demand, and flow of Bismuth. [PDF]
http://minerals.usgs.gov/minerals/pubs/commodity/bismuth/

Visual Elements: Bismuth
Source, uses, general and physical information, and key isotopes.
http://www.chemsoc.org/viselements/pages/bismuth.html

Wikipedia: Bismuth
Properties of the element, including its history, applications, and characteristics.
http://en.wikipedia.org/wiki/Bismuth

Radiochemistry of Bismuth
Full text of the monograph by Kashinath S. Bhatki (Tata Institute of Fundamental Research, Bombay India and Bhabha Atomic Research Centre, Trombay, Bombay, India). [PDF] <small>(September, 1977)</small>
http://library.lanl.gov/cgi-bin/getfile?rc000040.pdf