[mgatepi]

Hi Guys,

I am seeking a little help to find a series of books by Feynman. He was a theoretical physicist who published a series of books. My son who is a graduate student, wants the original series for Christmas. My question is; how do I know if the series was his original or a newer version???

Anyone here familiar with this and can help direct me into the right area???

Ebay has several listed....but how do I know??

Thanks!!