Seems like this guy is hosting dumps for WMF.
"For several years Georgia State was involved in litigation over the fair use doctrine. Specifically a consortium of publishers backed by Oxford, Cambridge and Sage sued Georgia State over copyright violations by many of the faculty. A decision has now been rendered. The Court backed Georgia State in almost every instance, finding no copyright violation. However, the Court did lay down some rules - in particular you can use no more than 10% or one chapter, whichever is shorter, of any book."