Advertising Policy

This site does not host or receive funding from advertising or from display of commercial content. In most categories we do provide links to publishers’ or book sellers’ websites as a convenience for our users so they will have ready access to the full citation of texts listed. In addition we do indicate by use of a $ symbol when a resource is not freely available. This allows our users to know readily whether or not a link is freely available to them.

Published: 07 Jul 2015

Revised: 13 Oct 2015