content: The back cover states "Thoroughly updated for it's Fourth Edition". Not true. The only difference between this and the 3rd edition is that the three Clinical Problem sets at the back of the 3rd edition (pages 347-383) have been replaced by a set of additional questions called the Maintenance of Certification Primer (pages 345-375). In the first 345 pages there may be a few questions that have changed between the 2 editions but I haven't found one yet - even chapter 7, the Pictorial Atlas, is unchanged. And I suspect the same will be true for the 4 online practice exams. Bottom line - buy the 3rd edition used for about $2 and save yourself $60. Still, this book is ok for FP boards as is Swanson's.