3
Έκδοση 1946
Full text available from Research Library: 01/01/1992 to 01/31/2018
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4
Έκδοση 2009
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Full text available from Social Science Database: 01/01/2016 to present
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5
Full text available from Earth, Atmospheric & Aquatic Science Database: 07/01/2012 to present
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6
Έκδοση 1968
Full text available from Research Library: 01/01/2006 to 12/31/2011
Full text available from Research Library: 01/01/2015 to present
Ηλεκτρονική πηγή Περιοδική έκδοση
7
Έκδοση 2008
Full text available from Continental Europe Database: 01/01/2008 to present
Full text available from Latin America & Iberia Database: 01/01/2008 to present
Full text available from Research Library: 01/01/2008 to present
Ηλεκτρονική πηγή Περιοδική έκδοση
8
Έκδοση 2012
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Full text available from Social Science Database: 01/01/2012 to present
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9
Έκδοση 1980
Full text available from Arts & Humanities Database: 01/01/2010 to 01/31/2017
Full text available from East Europe, Central Europe Database: 01/01/2010 to 01/31/2017
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12
Full text available from Linguistics Database: 01/01/2007 to present
Full text available from Research Library: 01/01/2007 to present
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13
Έκδοση 1991
Full text available from Linguistics Database: 01/01/2007 to 12/31/2012
Full text available from Research Library: 01/01/2007 to 12/31/2012
Full text available from Linguistics Database: 01/01/2017 to 07/31/2018
Full text available from Research Library: 01/01/2017 to 07/31/2018
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14
Full text available from Research Library: 12/01/2017 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
15
Έκδοση 2006
Full text available from Social Science Database: 01/01/2008 to 01/31/2009
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17
Full text available from PRISMA Database with HAPI Index: 01/01/2002 to 01/31/2002
Full text available from PRISMA Database with HAPI Index: 01/01/2002 to 01/31/2002
Full text available from Research Library: 01/01/2002 to 01/31/2002
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18
Έκδοση 1978
Full text available from ABI/INFORM Global: 03/01/1999 to 1999
Full text available from Science Database: 03/01/1999 to 1999
Full text available from Advanced Technologies & Aerospace Database: 03/01/1999 to 12/31/1999
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
19
Full text available from East Europe, Central Europe Database: 01/01/2011 to present
Full text available from Linguistics Database: 01/01/2011 to present
Full text available from Research Library: 01/01/2011 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό