http://www.cengage.com Content Type OA ? PCA ? Digital Collections No No Request a holdings comparison Portico provides a free holdings comparison service to compare a library’s journal or book holdings to the Portico archive. Search titles and ISSNs by keyword: Show: Digital Collections All0-9ABCDEFGHIJKLMNOPQRSTUVWXYZ Titles start with D (2) Daily Mail Historical Archive 1896-2004 Dictionary of Literary Biography Complete Online