It is a good read:
Allied Electronics
An Electrocomponents Company
2002/2003 Product Catalog
It is quite a good read - I most enjoyed chapter 15 on Power Supplies, Converters, and Power Protection. I'm going to buy the GLM50 W Ultra Small medical power supply. However for some items there wasn't enough information and thus I needed to do some internet browsing to fill in the blanks. Also the prices are already out of date - so be careful when buying from it.
Edit:
There is an online version too.
I hope this counts as a book - it is all I have time to read for pleasure anymore.