I can recommend a book
Feed yourself right by Dr. Lendon Smith.
I just checked Amazon and it is out of print. What I like about it is that to me it seem like non-hype practical information about vitamin needs. This is in relation to differnt stages of life. He also gets into vitamins to build up against allergies.

I found it to be straight forward, and used some of the information both for my kids and for myself.

It may not be what you are looking for but then again it may.

Irulan