Berkeley National Laboratory: Bohrium
An article about an effort to determine the volatility of this element.
ChemicalElements.com: Bohrium
Basic information, atomic structure, and isotopes.
EnvironmentalChemistry.com: Bohrium
Atomic structure, chemical and physical properties, and isotopes.
It's Elemental: Bohrium
Basic physical and historical information.
Lenntech: Bohrium
Basic chemical properties.
Visual Elements: Bohrium
Image, source, general and physical information, and ionisation energies.
WebElements: Bohrium
Information on history, isolation, and properties.