| from 09/01/1997 to present in ABI/INFORM Trade & Industry |
| from 09/05/1997 to present in Newspaper Source |
| from 04/01/2002 to present in Academic Search Premier |
| from 01/01/1991 to 09/01/1993 in Academic Search Premier and MasterFILE Premier |
| from 01/01/2000 to 1 year ago in Academic Search Premier and Business Source Corporate |
| from 02/01/1990 to present in Alt-HealthWatch |
| from 10/01/1998 to present in Business Source Corporate and Business Source Premier |
| from 01/01/2003 to present in Business Source Corporate and Business Source Premier |
| from 09/01/2000 to present in Business Source Corporate and Business Source Premier |
| from 09/01/1994 to 06/01/1996 in Business Source Corporate, Business Source Premier and MasterFILE Premier |
| from One month to present in Curtis Memorial Print Holdings |
| from 12/01/2002 to present in ABI/INFORM Global |
| from 12/21/1991 to 12/31/2000 in ProQuest Newsstand (Complete) |
| from 10/01/1994 to present in ABI/INFORM Trade & Industry |
| from 02/01/1992 to 01/01/1999 in ProQuest Newsstand (Complete) and ABI/INFORM Trade & Industry |
| from 10/01/1998 to present in Business Source Corporate and Business Source Premier |
| from 01/01/2003 to present in Business Source Corporate and Business Source Premier |
| from 09/01/2000 to present in Business Source Corporate and Business Source Premier |
| from 01/01/1979 to present in Academic Search Premier and MasterFILE Premier |
| from 06/01/2001 to present in Literature Resource Center |
| from 01/01/2002 to present in MasterFILE Premier and Vocational & Career Collection |
| from 01/01/2003 to 03/01/2003 in MasterFILE Premier, Middle Search Plus and MAS Ultra - School Edition |
| from 01/01/1998 to 1 year ago in Academic Search Premier and Health Source: Nursing/Academic Edition |
| from 03/01/2000 to 06/01/2000 in Academic Search Premier |
| from 01/01/1998 to 1 year ago in Academic Search Premier |
| from 1994 to present in Curtis Memorial Print Holdings |
| from 07/01/2002 to present in MasterFILE Premier |
| from 03/01/2001 to present in MasterFILE Premier and Primary Search |
| from 01/01/1992 to present in ABI/INFORM Global |
| from 01/01/2000 to present in Academic Search Premier, Business Source Corporate, Business Source Premier, MasterFILE Premier and MAS Ultra - School Edition |
| from 5 years to present in Curtis Memorial Print Holdings |
| from 07/01/1991 to 12/01/1999 in Academic Search Premier, Business Source Corporate, Business Source Premier, MasterFILE Premier and MAS Ultra - School Edition |
| from 01/01/2003 to present in Business Source Corporate and Business Source Premier |
| from 09/01/2000 to present in Business Source Corporate and Business Source Premier |
| from 08/01/2001 to present in Literature Resource Center |
| from 12/01/2001 to present in Academic Search Premier, MasterFILE Premier and MAS Ultra - School Edition |
| from 04/01/2002 to present in Business Source Premier and MasterFILE Premier |
| from 09/01/2000 to present in ABI/INFORM Trade & Industry |
| to Current year in Curtis Memorial Print Holdings |
| to Current year in Curtis Memorial Print Holdings |
| from 01/01/2002 to present in Literature Resource Center |
| from 03/01/2003 to present in Business Source Corporate and Business Source Premier |
| from 10/01/2002 to present in MasterFILE Premier |
| from 12/05/2001 to present in ProQuest Newsstand (Complete) |
| from 02/27/1997 to present in Newspaper Source |
| from 12/01/1998 to present in Business Source Corporate and Business Source Premier |
| from 09/06/2002 to present in MasterFILE Premier and Middle Search Plus |
| from 12/13/2002 to present in Professional Development Collection |
| from 03/01/1991 to 12/01/1998 in Academic Search Premier, MasterFILE Premier, Sociological Collection and Professional Development Collection |
| from 03/01/1999 to 1 year ago in ABI/INFORM Global |
| from 03/01/1990 to 12/01/1990 in Academic Search Premier, MasterFILE Premier, Sociological Collection and Professional Development Collection |
| from 09/01/2000 to 12/01/2002 in Business Source Corporate and Business Source Premier |
| from 07/01/2003 to 1 year ago in ABI/INFORM Global |
| from 03/01/1998 to 01/01/2002 in Academic Search Premier, Business Source Corporate and Business Source Premier |
| from 03/01/2002 to present in Academic Search Premier, Business Source Corporate and Business Source Premier |
| from 03/01/1998 to 6 months ago in Academic Search Premier, MasterFILE Premier, Sociological Collection and Professional Development Collection |
| from 02/27/1994 to present in ProQuest Newsstand (Complete) |
| from 08/15/2000 to present in Newspaper Source |
| from 01/01/1996 to present in ProQuest Newsstand (Complete) |
| from 01/10/1996 to 12/23/1998 in ProQuest Newsstand (Complete) and ABI/INFORM Trade & Industry |
| from 01/01/1999 to present in Literature Resource Center |
| from 01/01/2000 to present in Academic Search Premier and Sociological Collection |
| from 06/01/2001 to 6 months ago in Academic Search Premier |
| from 10/01/1998 to present in Business Source Corporate and Business Source Premier |
| from 01/01/2003 to present in Business Source Corporate and Business Source Premier |
| from 09/01/2000 to present in Business Source Corporate and Business Source Premier |
| from 03/01/1974 to 1 year ago in Academic Search Premier, Business Source Corporate and Business Source Premier |
| from 04/14/2003 to present in Newspaper Source |
| from 10/01/1998 to present in Business Source Corporate and Business Source Premier |
| from 01/01/2003 to present in Business Source Corporate and Business Source Premier |
| from 09/01/2000 to present in Business Source Corporate and Business Source Premier |