Are business and/or REI books tax deductible?

[Michael Seeker]

I just shipped another nice chunk of change to Amazon's coffers and got to wondering if there might be an untapped tax advantage to the purchase (along with all of the others I made this past year).

If I own rental properties, can I deduct REI/business book purchases on my tax return? If so, are there any limits or guidelines around the types of books that are deductible?

@Steven Hamilton II