- EnvironmentalChemistry.com: Berkelium
 - Offers an overview, name in other languages, atomic structure, chemical properties, physical properties, and regulatory information. - Lenntech: Berkelium
- Includes key data, history, health effects, and environmental effects.
- WebElements: Berkelium
- Overview with essential information, history, uses, physical properties, nuclear properties, and much more.
- Wikipedia: Berkelium
- Hyperlinked overview of the element with notable characteristics, history, isotopes, and more.
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