Unfortunately, it doesn't look like you can read it cover to cover or download it.

  By agreement with the publisher, this book is accessible by 
  the search feature, but cannot be browsed.

This is true. However, you can get to any topic you want easily using the search feature. A Table of Contents is provided, making front-to-back reading by topic pretty trivial.

I've taken many university courses using this book and managed to read all the required material on NCBI without much effort.

Ooh, much appreciated! Especially since a new hardcover is ~$150. Edited to note this.

do you see any reason he put this book in the list?