81
Έκδοση 1992
Full text available from Research Library: 03/01/2004 to 12/31/2009
Full text available from Social Science Database: 03/01/2004 to 12/31/2009
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
83
Full text available from Research Library: 02/01/2011 to present
Full text available from Education Database: 02/01/2011 to 03/31/2020
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
85
Full text available from East Europe, Central Europe Database: 01/01/2012 to present
Full text available from Education Database: 01/01/2012 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
86
87
Full text available from Education Database: 03/01/1997 to 1 year ago
Full text available from Health & Medical Collection: 03/01/1997 to 1 year ago
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
88
Έκδοση 2010
Full text available from Australia & New Zealand Database: 01/01/2010 to present
Full text available from Linguistics Database: 01/01/2010 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
89
90
Έκδοση 2003
Full text available from Canadian Business & Current Affairs Database: 01/01/2003 to 12/31/2011
Full text available from Canadian Business & Current Affairs Database: 01/01/2013 to 04/30/2017
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
92
Full text available from Engineering Database: 01/01/2010 to 01/31/2018
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
95
Έκδοση 1949
Full text available from Arts & Humanities Database: 03/01/2003 to 1 year ago
Full text available from Research Library: 03/01/2003 to 1 year ago
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
96
Έκδοση 1975
Full text available from Arts & Humanities Database: 10/01/1997 to 06/30/2004
Full text available from Military Database: 10/01/1997 to 06/30/2004
Full text available from Research Library: 10/01/1997 to 06/30/2004
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
99
Full text available from Latin America & Iberia Database: 07/01/2011 to present
Full text available from Nursing & Allied Health Database: 07/01/2011 to present
Full text available from Research Library: 07/01/2011 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
100
Έκδοση 2000
Full text available from East & South Asia Database: 06/01/2000 to present
Full text available from Education Database: 06/01/2000 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό