1
Έκδοση 2009
Full text available from Arts & Humanities Database: 01/01/2016 to present
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Ηλεκτρονική πηγή Επιστημονικό περιοδικό
2
Έκδοση 1997
Full text available from Latin America & Iberia Database: 01/01/2014 to present
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Ηλεκτρονική πηγή Επιστημονικό περιοδικό
4
Έκδοση 1962
Full text available from Latin America & Iberia Database: 01/01/2014 to present
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Full text available from Research Library: 01/01/2014 to present
Ηλεκτρονική πηγή Περιοδική έκδοση
5
Έκδοση 1990
Full text available from Latin America & Iberia Database: 04/01/2016 to 12/31/2018
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Ηλεκτρονική πηγή Επιστημονικό περιοδικό
6
Έκδοση 2008
Full text available from ABI/INFORM Global: 08/01/2005 to present
Full text available from Latin America & Iberia Database: 08/01/2005 to present
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Ηλεκτρονική πηγή Επιστημονικό περιοδικό
7
Έκδοση 1978
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