ChemGlobe: Bromine - Electronic, thermal, and steric data along with an isotope table. - http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/35.html
LANL: Bromine - History, properties, uses, and production. - http://periodic.lanl.gov/elements/35.html
Wikipedia: Bromine - Properties of the element, including its history, applications, and characteristics. - http://en.wikipedia.org/wiki/Bromine
Lenntech: Bromine - Physical data, chemical properties, health and environmental effects. - http://www.lenntech.com/Periodic-chart-elements/Br-en.htm
EnvironmentalChemistry.com: Bromine - Atomic structure, chemical and physical properties, and table of nuclides. - http://environmentalchemistry.com/yogi/periodic/Br.html
USGS Minerals Information: Bromine - Statistics and information on the worldwide supply, demand, and flow of the element (PDF format). - http://minerals.usgs.gov/minerals/pubs/commodity/bromine/