1
Full text available from PRISMA Database with HAPI Index: 04/01/2011 to present
Full text available from Research Library: 04/01/2011 to present
Full text available from PRISMA Database with HAPI Index: 04/01/2014 to 04/30/2017
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
2
Full text available from Research Library: 01/10/2005 to 08/10/2008
Full text available from Research Library: 11/09/2009 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
3
Full text available from Health & Medical Collection: 01/05/1997 to present
Full text available from New York Times: 01/05/1997 to present
Full text available from Research Library: 01/05/1997 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
5
Full text available from Education Database: 10/01/2000 to 09/30/2001
Full text available from Research Library: 10/01/2000 to 09/30/2001
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
6
Full text available from Arts & Humanities Database: 11/04/2002 to present
Full text available from Military Database: 11/04/2002 to present
Full text available from Research Library: 11/04/2002 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
7
Full text available from Criminal Justice Database: 07/01/2009 to present
Full text available from Research Library: 07/01/2009 to present
Full text available from Social Science Database: 07/01/2009 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
8
Έκδοση 1985
Full text available from ABI/INFORM Dateline: 10/07/1996 to present
Full text available from Career & Technical Education Database: 10/07/1996 to present
Full text available from U.S. Northeast Newsstream: 10/07/1996 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
9
Έκδοση 1994
Full text available from ABI/INFORM Dateline: 09/01/2001 to 11/30/2009
Full text available from Engineering Database: 09/01/2001 to 11/30/2009
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
10
Available in Education Source.
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
11
Έκδοση 2000
Available in Fuente Académica Plus.
Ηλεκτρονική πηγή Επιστημονικό περιοδικό