Anyone know of a website that lists foodstuffs and their vitamin/mineral contents?

[snafu]

I need something that says e.g.

Bananas - fibre, potassium
Oranges - vit C
Spinach - iron, vit whatever, blah blah blah

any ideas?

Sorry snafu, don't know a website but I got a book by Amanda Ursell that did the job!