Other
Chemical Element: Periodic Table: Gadolinium
Basic properties of the element Gadolinium Includes Bohr model.
Chemicool
Chemicool: Gadolinium
This site offers physical data on the element Gadolinium. Also contains abundance and cost.
Web Elements
Web Elements Periodic Table: Gadolinium
This site from Web Elements and Mark Winter provides complete information about the element Gadolinium. Includes physical data, uses, and and isolation techniques.