22
Full text available from Library Science Database: 10/01/2003 to 04/30/2007
Full text available from Research Library: 10/01/2003 to 04/30/2007
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
23
Έκδοση 1986
Full text available from ABI/INFORM Global: 10/01/1987 to 1988
Full text available from Advanced Technologies & Aerospace Database: 10/01/1987 to 1988
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
24
Full text available from Education Database: 07/01/2013 to present
Full text available from Library Science Database: 07/01/2013 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
27
Full text available from Computer Science Database: 01/01/2012 to 07/31/2015
Full text available from India Database: 01/01/2012 to 07/31/2015
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
29
Full text available from Advanced Technologies & Aerospace Database: 07/01/2010 to present
Full text available from Library Science Database: 07/01/2010 to present
Full text available from UK & Ireland Database: 07/01/2010 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
30
Έκδοση 1982
Full text available from ABI/INFORM Trade & Industry: 02/01/1998 to 11/30/2006
Full text available from Advanced Technologies & Aerospace Database: 02/01/1998 to 11/30/2006
Full text available from Research Library: 02/01/1998 to 11/30/2006
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
31
Full text available from Military Database: 08/01/2005 to 12/31/2005
Full text available from Public Health Database: 08/01/2005 to 12/31/2005
Full text available from Research Library: 08/01/2005 to 12/31/2005
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
32
Έκδοση 1988
Full text available from Library Science Database: 04/01/2010 to 10/31/2010
Full text available from Research Library: 04/01/2010 to 10/31/2010
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
33
Έκδοση 1999
Full text available from PRISMA Database with HAPI Index: 01/01/2003 to 01/31/2006
Full text available from PRISMA Database with HAPI Index: 01/01/2003 to 01/31/2006
Ηλεκτρονική πηγή Περιοδική έκδοση
38
Έκδοση 1995
Full text available from Advanced Technologies & Aerospace Database: 01/01/2012 to 10/31/2015
Full text available from India Database: 01/01/2012 to 10/31/2015
Full text available from Library Science Database: 01/01/2012 to 10/31/2015
Ηλεκτρονική πηγή Επιστημονικό περιοδικό