ChemGlobe: Lawrencium: Electronic and thermal data along with an isotope table.
ChemicalElements.com: Lawrencium: Basic information, atomic structure, and isotopes.
EnvironmentalChemistry.com: Lawrencium: Atomic structure, chemical and physical properties, and table of nuclides.
It's Elemental: Lawrencium: Basic physical and historical information.
LANL: Lawrencium: Basic information, history, and properties.
Lawrencium: Data tables and historic information.
Lenntech: Lawrencium: Physical data and chemical properties.
Visual Elements: Lawrencium: General and physical information, and key isotopes.
WebElements: Lawrencium: Information on history and properties.
Wikipedia: Lawrencium: Characteristics and history of the element.