removes book from 2008 "Out of Print" Book Trends Report

Margin of Safety: The Story of Poliomyelitis Vaccine was the #5 book in the "History" category. The book has been removed from the 2008 report. More details here.


that margin of safety book about the vaccine was getting confused with the none people really want, the "$1,000 book" that's OOP (the financial strategy book; used copies go for $700 or more).