Antimony

ChemGlobe: Antimony - Electronic, thermal, and steric data along with an isotope table.
partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/51.html

ChemicalElements.com: Antimony - Basic information, atomic structure, and table of isotopes.
www.chemicalelements.com/elements/sb.html

EnvironmentalChemistry.com: Antimony - Atomic structure, properties, and table of nuclides.
environmentalchemistry.com/yogi/periodic/Sb.html

It's Elemental: Antimony - Basic physical and historical information.
education.jlab.org/itselemental/ele051.html

LANL: Antimony - History, sources, properties, and uses.
periodic.lanl.gov/elements/51.html

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

USGS Minerals Information: Antimony - Overview and a number of publications in PDF format.
minerals.usgs.gov/minerals/pubs/commodity/antimony/

Visual Elements: Antimony - Image, source, uses, general and physical information, and key isotopes.
www.chemsoc.org/viselements/pages/antimony.html

Wikipedia: Antimony - Details the properties of the element, including its history, applications, and characteristics.
en.wikipedia.org/wiki/Antimony

Radiochemistry of Antimony - Full text of the monograph by William J. Maeck (Phillips Petroleum Company, Atomic Energy Division, Idaho Falls, Idaho). [PDF] <small>(February, 1961)</small>
lib-www.lanl.gov/cgi-bin/getfile?rc000057.pdf