Intermediate to advanced level R.E. investing books

[Westley Douglas]

I was wondering if anyone knew of R.E. books that appealed to more seasoned investors? Where they didn't explain what a mortgage is and don't waste their time spelling out the A's B's and C's of real estate. I'm looking for books or material that define the D's E's and F's of real estate. I know the forums right here are a great tool for that however I'm still looking for material I can hold in my hand and study from. Appreciate any input! Thank you for your time. 

-Westley