Space - Time - Matter: Modern Kaluza-Klein Theory

I wanted to buy a copy of this for my boyfriend, but they said the first edition was sold out and that the second edition would only be out "soon" in 2007. So, if you've got a copy of the first edition, hold onto it, because I think it's very good (or if you don't need it, let me know). My roommate had a copy, and it's the easiest way I found to get to know about how to match up Einstein relativity with Planck quantum mechanics. Every chapter has an Introduction and Conclusion in text, with the equations in the sections inbetween. If somebody can write a book like this on cosmology with secret dimensions, why can't they all be like this?